ASTROSAT CZTI

Data Quality Report

Orbit 20181107_A05_056T01_9000002498_level2

Creation date: 2018-11-15T18:00:05.745014
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_056T01_9000002498cztM0_level2_bc.evt modeM0/AS1A05_056T01_9000002498cztM0_level2_quad_clean.evt
Size (bytes)6,785,651,5202,179,831,680
Size6.3 GB 2.0 GB
Events in quadrant A46,249,73613,745,253
Events in quadrant B40,538,33514,065,800
Events in quadrant C40,742,07713,257,721
Events in quadrant D65,975,02912,877,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02750
B02750
C02750
D02750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03967530
B03764900
C03860650
D04729200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035940
B035940
C035940
D035940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17632639282.227692%
B17632622031.249390%
C17632628651.624831%
D17632680274.552363%

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 203892 176332 585 585 0.29% 0.33%
B 203892 176329 27 27 0.01% 0.02%
C 203892 176329 5 5 0.00% 0.00%
D 203892 176322 1247 1247 0.61% 0.71%

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 0 23 9087628 4566.09 9247 9086 1988.3
A 9 143 611484 302.98 9247 9086 1988.3
A 0 226 553059 273.59 9247 9086 1988.3
B 0 229 1845347 1052.53 9426 9184 1744.5
B 10 16 1015993 577.12 9426 9184 1744.5
B 15 35 468714 263.41 9426 9184 1744.5
C 3 233 5169133 2457.68 8999 8948 2099.6
C 0 207 822830 387.63 8999 8948 2099.6
C 7 247 189819 86.14 8999 8948 2099.6
D 1 52 24773240 11968.12 9011 8694 2069.2
D 5 222 5151338 2485.32 9011 8694 2069.2
D 2 234 638553 304.4 9011 8694 2069.2

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