ASTROSAT CZTI

Data Quality Report

Orbit 20210519_A10_053T22_9000004384_level2

Creation date: 2025-12-25T21:48:55.001406
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/AS1A10_053T22_9000004384cztM0_level2.fits modeM0/AS1A10_053T22_9000004384cztM0_level2_quad_clean.evt
Size (bytes)254,790,72098,902,080
Size243.0 MB 94.3 MB
Events in quadrant A1,677,022371,123
Events in quadrant B1,564,274366,242
Events in quadrant C1,549,498344,921
Events in quadrant D1,323,300308,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512490
B0714550
C0544710
D0750820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232763081.323251%
B232763971.705620%
C232766172.650799%
D23276245310.538752%

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 28249 23272 0 0 0.00% 0.00%
B 28249 23273 0 0 0.00% 0.00%
C 28249 23273 0 0 0.00% 0.00%
D 28249 23180 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 1566 10.95 437 415 105.2
A 9 19 1240 7.85 437 415 105.2
A 0 30 1224 7.69 437 415 105.2
B 2 9 1214 9.87 413 398 82.7
B 3 80 1095 8.43 413 398 82.7
B 5 255 1041 7.78 413 398 82.7
C 1 81 1222 7.99 410 387 104.5
C 1 80 1186 7.65 410 387 104.5
C 12 241 1108 6.9 410 387 104.5
D 15 46 1042 7.0 378 348 99.1
D 10 189 956 6.14 378 348 99.1
D 6 67 940 5.97 378 348 99.1

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