ASTROSAT CZTI

Data Quality Report

Orbit 54388

Creation date: 2025-10-17T17:28:20.021942
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_126T19_9000006518_54388cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54388cztM0_level2_quad_clean.evt
Size (bytes)683,432,64080,881,920
Size651.8 MB 77.1 MB
Events in quadrant A2,746,226602,841
Events in quadrant B5,032,481559,051
Events in quadrant C4,029,421558,375
Events in quadrant D12,991,149279,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131545
B0196651
C0166421
D04304929

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64281081.680149%
B6432101115.718284%
C64333345.191979%
D6428349454.355943%

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 7147 6433 1 1 0.01% 0.02%
B 7147 6433 697 697 9.75% 10.83%
C 7148 6434 259 259 3.62% 4.03%
D 7147 6431 3382 3382 47.32% 52.59%

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 4 3 22056 125.57 690 670 170.3
A 6 161 16936 95.51 690 670 170.3
A 13 254 14183 79.35 690 670 170.3
B 10 14 2351637 17262.06 627 604 136.2
B 0 171 64723 470.78 627 604 136.2
B 0 213 26476 189.96 627 604 136.2
C 1 241 403608 2280.27 651 644 176.7
C 14 254 396452 2239.77 651 644 176.7
C 13 16 290083 1637.86 651 644 176.7
D 8 176 9045708 62354.74 506 480 145.1
D 2 172 1363494 9396.16 506 480 145.1
D 2 252 224164 1542.0 506 480 145.1

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