ASTROSAT CZTI

Data Quality Report

Orbit 55450

Creation date: 2025-12-28T04:21:30.122958
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/AS1A14_099T01_9000006536_55450cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55450cztM0_level2_quad_clean.evt
Size (bytes)842,754,24091,379,520
Size803.7 MB 87.1 MB
Events in quadrant A3,769,986721,255
Events in quadrant B4,269,950760,426
Events in quadrant C3,573,381678,930
Events in quadrant D18,989,25275,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01531
C01542
D01542

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017137104
B018522204
C016752150
D062265630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7648660.862971%
B76361942.540597%
C76321031.349581%
D7620692990.931759%

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 7684 7662 42 42 0.55% 0.55%
B 7651 7645 129 129 1.69% 1.69%
C 7671 7647 62 62 0.81% 0.81%
D 7657 7620 6607 6607 86.29% 86.71%

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 3 78 282918 1398.17 807 786 201.8
A 0 8 185457 915.18 807 786 201.8
A 4 159 106416 523.47 807 786 201.8
B 0 171 351715 2096.66 792 762 167.4
B 5 236 250143 1489.85 792 762 167.4
B 10 247 219185 1304.9 792 762 167.4
C 13 3 336157 1546.04 787 779 216.9
C 12 252 66152 301.36 787 779 216.9
C 15 147 34259 154.34 787 779 216.9
D 2 62 15588736 140269.54 382 365 111.1
D 6 239 682027 6133.83 382 365 111.1
D 7 70 450913 4054.19 382 365 111.1

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