ASTROSAT CZTI

Data Quality Report

Orbit 54279

Creation date: 2025-10-10T10:05:39.215332
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_126T15_9000006516_54279cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54279cztM0_level2_quad_clean.evt
Size (bytes)466,804,80096,036,480
Size445.2 MB 91.6 MB
Events in quadrant A3,020,965644,476
Events in quadrant B3,381,924691,547
Events in quadrant C4,765,551563,292
Events in quadrant D5,574,438528,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140662
B0154061
C0193891
D0215811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6895100.145033%
B6896480.696056%
C68966849.918794%
D689670610.237819%

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 7780 6896 4 4 0.05% 0.06%
B 7781 6897 13 13 0.17% 0.19%
C 7781 6897 698 698 8.97% 10.12%
D 7781 6896 730 730 9.38% 10.59%

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 77086 431.35 715 700 177.1
A 6 195 59797 333.72 715 700 177.1
A 11 3 55945 311.97 715 700 177.1
B 7 0 267069 1746.85 711 686 152.5
B 8 234 95963 624.8 711 686 152.5
B 5 185 67844 440.4 711 686 152.5
C 1 241 1825912 9909.32 672 665 184.2
C 14 254 115501 623.45 672 665 184.2
C 12 2 52477 281.29 672 665 184.2
D 2 62 1016061 5247.14 672 640 193.5
D 8 176 456940 2357.91 672 640 193.5
D 2 172 381168 1966.36 672 640 193.5

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