ASTROSAT CZTI

Data Quality Report

Orbit 55252

Creation date: 2025-12-14T22:10:55.111068
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_009T01_9000006534_55252cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55252cztM0_level2_quad_clean.evt
Size (bytes)455,549,76094,536,000
Size434.4 MB 90.2 MB
Events in quadrant A3,435,282621,924
Events in quadrant B4,620,237610,115
Events in quadrant C3,442,034597,859
Events in quadrant D4,836,456558,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153401
B0189421
C0154421
D0186871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67991572.309163%
B679972610.678041%
C68001502.205882%
D68002113.102941%

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 7544 6800 99 99 1.31% 1.46%
B 7544 6800 502 502 6.65% 7.38%
C 7545 6801 106 106 1.40% 1.56%
D 7545 6801 156 156 2.07% 2.29%

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 62 329795 1870.42 708 689 176.0
A 0 8 229951 1302.97 708 689 176.0
A 3 45 33325 185.48 708 689 176.0
B 5 185 1293648 9088.02 660 635 142.3
B 2 249 579335 4067.43 660 635 142.3
B 0 182 39488 273.08 660 635 142.3
C 13 3 324150 1711.27 688 681 189.0
C 14 254 210597 1110.53 688 681 189.0
C 15 193 64102 335.52 688 681 189.0
D 5 38 1158475 5964.77 688 660 194.1
D 2 249 359127 1846.73 688 660 194.1
D 2 31 135951 696.98 688 660 194.1

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