ASTROSAT CZTI

Data Quality Report

Orbit 54641

Creation date: 2025-11-04T12:30:54.272927
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_066T07_9000006522_54641cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54641cztM0_level2_quad_clean.evt
Size (bytes)2,102,209,920346,619,520
Size2.0 GB 330.6 MB
Events in quadrant A20,215,9402,148,080
Events in quadrant B11,253,2222,549,327
Events in quadrant C27,901,1601,968,214
Events in quadrant D16,475,7362,072,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0781732
B0526092
C01005983
D0669122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05140
B05160
C05160
D05160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25513330612.958100%
B255143671.438426%
C25513402115.760593%
D2551311444.483989%

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 26438 25515 2247 2247 8.50% 8.81%
B 26438 25516 16 16 0.06% 0.06%
C 26437 25515 3146 3146 11.90% 12.33%
D 26438 25516 804 804 3.04% 3.15%

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 7 190 8103534 12545.78 2633 2571 645.7
A 11 3 875319 1351.6 2633 2571 645.7
A 3 62 202211 309.18 2633 2571 645.7
B 10 247 81199 133.74 2736 2629 587.5
B 7 252 76690 126.06 2736 2629 587.5
B 12 111 73365 120.4 2736 2629 587.5
C 9 38 13941529 20317.11 2540 2526 686.1
C 15 147 956534 1390.54 2540 2526 686.1
C 13 3 572205 830.35 2540 2526 686.1
D 8 160 2684841 3548.37 2650 2534 755.9
D 2 249 1043859 1377.55 2650 2534 755.9
D 6 239 1009756 1332.43 2650 2534 755.9

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