ASTROSAT CZTI

Data Quality Report

Orbit 58775

Creation date: 2026-08-09T13:30:56.975956
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_106T01_9000006596_58775cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58775cztM0_level2_quad_clean.evt
Size (bytes)683,424,00076,034,880
Size651.8 MB 72.5 MB
Events in quadrant A3,643,582579,876
Events in quadrant B4,045,455630,316
Events in quadrant C3,573,151564,793
Events in quadrant D13,574,216112,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510361
B01602414
C01479217
D04440994

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59363836.452156%
B59392664.478868%
C59412454.123885%
D5935494983.386689%

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 7076 5942 272 272 3.84% 4.58%
B 7076 5946 128 128 1.81% 2.15%
C 7075 5946 158 158 2.23% 2.66%
D 7076 5941 4460 4460 63.03% 75.07%

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 15 233 962519 5829.15 664 645 165.0
A 5 113 24767 146.18 664 645 165.0
A 3 245 20472 120.16 664 645 165.0
B 0 171 741737 5321.1 659 637 139.3
B 4 236 178647 1278.11 659 637 139.3
B 8 234 131693 940.98 659 637 139.3
C 2 12 578213 3227.67 650 644 178.9
C 4 5 99667 553.38 650 644 178.9
C 6 223 93141 516.91 650 644 178.9
D 12 110 7069738 57372.61 424 404 123.2
D 11 129 4336160 35187.71 424 404 123.2
D 2 120 289089 2342.88 424 404 123.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct