ASTROSAT CZTI

Data Quality Report

Orbit 20190126_A05_159T01_9000002678_level2

Creation date: 2019-01-29T16:12:48.234532
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_159T01_9000002678cztM0_level2_bc.evt modeM0/AS1A05_159T01_9000002678cztM0_level2_quad_clean.evt
Size (bytes)7,844,808,9603,025,716,480
Size7.3 GB 2.8 GB
Events in quadrant A50,262,24619,985,962
Events in quadrant B49,018,90420,079,041
Events in quadrant C51,087,14619,048,151
Events in quadrant D73,282,92118,516,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041760
B041760
C041760
D041760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03330
B03330
C03330
D03330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04491970
B04446760
C04540160
D05264350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20472935381.728138%
B20472833501.636317%
C20472939021.905934%
D20472967513.297530%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 238320 204720 230 230 0.10% 0.11%
B 238320 204725 104 104 0.04% 0.05%
C 238320 204730 184 184 0.08% 0.09%
D 238320 204726 1094 1094 0.46% 0.53%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 3293393 1260.6 11673 11445 2603.5
A 6 16 1236264 470.46 11673 11445 2603.5
A 4 2 888648 336.94 11673 11445 2603.5
B 7 220 1160792 506.26 11745 11534 2270.1
B 5 172 530178 228.47 11745 11534 2270.1
B 0 197 448634 192.55 11745 11534 2270.1
C 3 233 3974327 1510.89 11089 11122 2623.1
C 0 207 3369562 1280.33 11089 11122 2623.1
C 8 208 573771 214.5 11089 11122 2623.1
D 5 222 12328431 4544.15 11303 10947 2710.6
D 11 176 7100775 2615.57 11303 10947 2710.6
D 7 238 5376504 1979.45 11303 10947 2710.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter