ASTROSAT CZTI

Data Quality Report

Orbit 57199

Creation date: 2026-04-28T18:43:31.125522
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_070T08_9000006568_57199cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57199cztM0_level2_quad_clean.evt
Size (bytes)2,245,092,480318,196,800
Size2.1 GB 303.5 MB
Events in quadrant A10,606,3102,302,803
Events in quadrant B14,707,1872,345,256
Events in quadrant C20,083,6842,024,665
Events in quadrant D35,816,1711,275,311

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502833
B0612074
C0772993
D01233113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A244822951.204967%
B2448116896.899228%
C24481262510.722601%
D24481962639.320289%

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 26162 24484 4 4 0.02% 0.02%
B 26161 24481 881 881 3.37% 3.60%
C 26160 24481 2141 2141 8.18% 8.75%
D 26160 24480 8759 8759 33.48% 35.78%

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 14 383930 592.84 2621 2554 643.3
A 10 251 39274 57.08 2621 2554 643.3
A 13 254 36534 52.82 2621 2554 643.3
B 5 185 2896532 5410.35 2517 2418 534.9
B 10 16 515750 959.64 2517 2418 534.9
B 0 183 239391 443.01 2517 2418 534.9
C 15 224 9824286 14933.44 2425 2393 657.7
C 12 252 189534 284.53 2425 2393 657.7
C 14 254 173995 260.91 2425 2393 657.7
D 12 33 21829187 38944.95 1988 1896 560.5
D 12 3 4182914 7459.91 1988 1896 560.5
D 7 96 391223 694.65 1988 1896 560.5

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