ASTROSAT CZTI

Data Quality Report

Orbit 54788

Creation date: 2025-11-14T17:06:03.749403
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_103T01_9000006524_54788cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54788cztM0_level2_quad_clean.evt
Size (bytes)2,281,858,560384,318,720
Size2.1 GB 366.5 MB
Events in quadrant A13,372,5512,752,066
Events in quadrant B17,764,3092,748,677
Events in quadrant C31,070,3391,953,995
Events in quadrant D20,114,6172,273,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05600
B05600
C05600
D05600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06253618
B07378769
C011187878
D08105583

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A277485431.956898%
B2774517036.138043%
C27740697425.140591%
D2773923308.399726%

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 28476 27758 352 352 1.24% 1.27%
B 28476 27756 1306 1306 4.59% 4.71%
C 28476 27757 3700 3700 12.99% 13.33%
D 28476 27755 2054 2054 7.21% 7.40%

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 13 248 870316 1183.45 2875 2811 733.0
A 0 8 854057 1161.27 2875 2811 733.0
A 0 117 124098 165.46 2875 2811 733.0
B 2 249 5051897 8495.96 2741 2640 594.3
B 5 185 979055 1642.93 2741 2640 594.3
B 4 81 559397 936.81 2741 2640 594.3
C 9 38 10299928 15400.29 2413 2397 668.7
C 15 148 8090650 12096.25 2413 2397 668.7
C 14 254 960534 1432.93 2413 2397 668.7
D 15 94 3452761 4495.74 2670 2558 767.4
D 3 12 3108235 4046.81 2670 2558 767.4
D 3 224 691018 897.09 2670 2558 767.4

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