ASTROSAT CZTI

Data Quality Report

Orbit 58452

Creation date: 2026-07-18T02:42:08.679947
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_045T01_9000006590_58452cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58452cztM0_level2_quad_clean.evt
Size (bytes)421,816,32093,061,440
Size402.3 MB 88.8 MB
Events in quadrant A2,913,780623,173
Events in quadrant B3,326,705661,229
Events in quadrant C4,648,370550,168
Events in quadrant D4,230,971539,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133782
B0143242
C0182112
D0170652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6355310.487805%
B63551141.793863%
C63555849.189614%
D63543225.067674%

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 7455 6356 11 11 0.15% 0.17%
B 7455 6355 71 71 0.95% 1.12%
C 7455 6356 458 458 6.14% 7.21%
D 7454 6355 264 264 3.54% 4.15%

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 12 80 91763 526.14 697 681 173.1
A 3 14 49895 284.29 697 681 173.1
A 10 248 28333 159.73 697 681 173.1
B 5 172 127906 857.52 691 667 148.4
B 4 201 112684 754.93 691 667 148.4
B 5 185 74942 500.57 691 667 148.4
C 1 12 1462935 8205.97 647 643 178.2
C 12 250 199206 1114.28 647 643 178.2
C 13 3 155105 866.8 647 643 178.2
D 8 240 1157343 6147.16 657 628 188.2
D 12 248 95003 501.54 657 628 188.2
D 6 239 83449 440.14 657 628 188.2

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