ASTROSAT CZTI

Data Quality Report

Orbit 56112

Creation date: 2026-02-11T13:22:46.597364
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_083T03_9000006548_56112cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56112cztM0_level2_quad_clean.evt
Size (bytes)2,886,249,600454,227,840
Size2.7 GB 433.2 MB
Events in quadrant A37,130,3502,639,203
Events in quadrant B17,166,2133,351,307
Events in quadrant C29,787,9722,686,745
Events in quadrant D20,136,2832,742,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01338716
B0750467
C01127386
D0847006

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06920
B06920
C06920
D06920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33928628618.527470%
B339276792.001356%
C33928456213.446121%
D3392811783.472058%

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 37503 33933 5088 5088 13.57% 14.99%
B 37502 33933 64 64 0.17% 0.19%
C 37503 33931 3250 3250 8.67% 9.58%
D 37503 33934 751 751 2.00% 2.21%

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 14 6479603 7830.96 3360 3272 827.0
A 12 115 5578856 6741.81 3360 3272 827.0
A 7 64 4959559 5992.98 3360 3272 827.0
B 9 254 1435587 1899.12 3568 3436 754.1
B 10 247 347361 456.06 3568 3436 754.1
B 0 199 253647 331.79 3568 3436 754.1
C 12 254 13206153 14651.82 3323 3289 901.1
C 12 252 1296890 1435.57 3323 3289 901.1
C 13 3 1037404 1147.6 3323 3289 901.1
D 8 240 2222006 2264.86 3471 3319 979.6
D 11 129 1340281 1364.78 3471 3319 979.6
D 2 249 1076025 1095.03 3471 3319 979.6

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