ASTROSAT CZTI

Data Quality Report

Orbit 20190609_A06_002T02_9000002982_level2

Creation date: 2019-06-13T10:25:22.824976
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/AS1A06_002T02_9000002982cztM0_level2_bc.evt modeM0/AS1A06_002T02_9000002982cztM0_level2_quad_clean.evt
Size (bytes)5,041,321,9201,795,368,960
Size4.7 GB 1.7 GB
Events in quadrant A37,790,97711,423,645
Events in quadrant B32,300,71611,614,117
Events in quadrant C32,564,29711,109,278
Events in quadrant D40,849,74811,005,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02110
B02110
C02110
D02110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027440
B027440
C027440
D027440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200260
B02986110
C03011390
D03243820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13470045653.389013%
B13470024461.815887%
C13470029672.202673%
D13470040152.980698%

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 154904 134693 97 97 0.06% 0.07%
B 154903 134691 45 45 0.03% 0.03%
C 154904 134696 5 5 0.00% 0.00%
D 154903 134696 477 477 0.31% 0.35%

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 14 238 7667701 4796.55 7346 7223 1597.1
A 14 254 1059240 658.71 7346 7223 1597.1
A 5 16 429663 264.51 7346 7223 1597.1
B 7 220 1290756 919.21 7421 7241 1396.3
B 0 197 535982 378.67 7421 7241 1396.3
B 0 245 285949 199.6 7421 7241 1396.3
C 3 233 2267164 1372.24 7078 7056 1647.0
C 0 207 1621795 980.4 7078 7056 1647.0
C 9 221 1344842 812.24 7078 7056 1647.0
D 1 52 5833874 3528.24 7263 7038 1651.5
D 12 218 2402390 1450.42 7263 7038 1651.5
D 7 238 1210693 728.83 7263 7038 1651.5

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