ASTROSAT CZTI

Data Quality Report

Orbit 53740

Creation date: 2025-09-04T02:59:52.606079
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_022T04_9000006506_53740cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53740cztM0_level2_quad_clean.evt
Size (bytes)1,792,828,80098,720,640
Size1.7 GB 94.1 MB
Events in quadrant A25,533,860152,958
Events in quadrant B5,117,8241,026,916
Events in quadrant C22,401,838344,315
Events in quadrant D12,502,553735,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08313416
B0231121
C0736481
D0444281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10518906886.214109%
B105201361.292776%
C10520693965.960076%
D10520198918.906844%

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 10553 10517 8606 8606 81.55% 81.83%
B 10555 10521 45 45 0.43% 0.43%
C 10555 10520 6495 6495 61.53% 61.74%
D 10555 10521 1760 1760 16.67% 16.73%

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 63 13347465 98414.75 534 521 135.6
A 3 78 9615341 70895.64 534 521 135.6
A 5 241 180123 1324.31 534 521 135.6
B 12 3 194470 843.01 1069 1031 229.5
B 0 213 161717 700.28 1069 1031 229.5
B 5 185 116187 501.85 1069 1031 229.5
C 1 241 12836659 72309.19 639 632 177.5
C 15 224 5063257 28519.29 639 632 177.5
C 3 242 505568 2844.46 639 632 177.5
D 2 172 2378642 8514.26 983 942 279.3
D 2 153 2269171 8122.26 983 942 279.3
D 1 241 1133606 4055.93 983 942 279.3

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