ASTROSAT CZTI

Data Quality Report

Orbit 20160126_G02_020T01_9000000296_level2

Creation date: 2025-10-26T01:00:58.460262
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G02_020T01_9000000296cztM0_level2.fits modeM0/AS1G02_020T01_9000000296cztM0_level2_quad_clean.evt
Size (bytes)887,207,0401,111,256,640
Size846.1 MB 1.0 GB
Events in quadrant A5,170,1386,929,268
Events in quadrant B5,100,3946,961,556
Events in quadrant C5,049,0306,555,862
Events in quadrant D4,360,4946,023,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139775209433128139771120713774
B1139775209433128139771120713774
C1139775209433128139771120713774
D1139775209433128139771120713774

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020960
B020960
C020960
D020960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04632070
B04624720
C04458190
D04553830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1048886390.609221%
B1048945510.525292%
C1048945250.500505%
D10489419321.841859%

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 121326 104891 0 0 0.00% 0.00%
B 121326 104892 0 0 0.00% 0.00%
C 121326 104898 0 0 0.00% 0.00%
D 121326 104867 0 0 0.00% 0.00%

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 29 4804 11.42 1338 1247 311.5
A 7 110 4472 10.35 1338 1247 311.5
A 14 79 3748 8.03 1338 1247 311.5
B 2 9 4096 11.8 1348 1281 238.6
B 10 225 3209 8.08 1348 1281 238.6
B 14 254 3176 7.94 1348 1281 238.6
C 12 241 3432 6.89 1331 1229 319.7
C 2 191 3355 6.65 1331 1229 319.7
C 1 81 3295 6.46 1331 1229 319.7
D 1 19 3213 7.18 1244 1139 289.0
D 6 231 3177 7.05 1244 1139 289.0
D 11 82 3104 6.8 1244 1139 289.0

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