ASTROSAT CZTI

Data Quality Report

Orbit 54112

Creation date: 2025-09-29T03:04:34.298024
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_012T01_9000006512_54112cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54112cztM0_level2_quad_clean.evt
Size (bytes)485,498,880100,658,880
Size463.0 MB 96.0 MB
Events in quadrant A3,248,434664,890
Events in quadrant B5,423,984670,874
Events in quadrant C3,296,335637,241
Events in quadrant D5,459,234587,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149912
B0208882
C0153052
D0210392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69951121.601144%
B69956379.106505%
C69941452.073206%
D69942553.645982%

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 7750 6996 29 29 0.37% 0.41%
B 7750 6996 341 341 4.40% 4.87%
C 7749 6995 37 37 0.48% 0.53%
D 7749 6995 157 157 2.03% 2.24%

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 4 249 114611 627.28 735 717 181.6
A 15 174 104773 573.09 735 717 181.6
A 8 246 34470 185.9 735 717 181.6
B 5 236 1291825 8619.78 709 684 149.8
B 14 167 355987 2372.04 709 684 149.8
B 0 213 235296 1566.29 709 684 149.8
C 15 157 143735 719.86 724 718 198.7
C 15 147 137539 688.68 724 718 198.7
C 12 250 39256 193.98 724 718 198.7
D 10 181 775847 3791.66 717 684 204.4
D 2 172 675628 3301.44 717 684 204.4
D 2 165 465282 2272.55 717 684 204.4

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