ASTROSAT CZTI

Data Quality Report

Orbit 57857

Creation date: 2026-06-08T02:08:51.821037
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_125T11_9000006582_57857cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57857cztM0_level2_quad_clean.evt
Size (bytes)501,194,88092,770,560
Size478.0 MB 88.5 MB
Events in quadrant A3,073,786646,814
Events in quadrant B2,999,806687,146
Events in quadrant C8,211,589454,142
Events in quadrant D3,768,276572,516

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134652
B0136748
C02886716
D0157765

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0171
C0171
D0182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6422220.342572%
B6420560.872274%
C6420183128.520249%
D6421420.654104%

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 7542 6422 3 3 0.04% 0.05%
B 7542 6423 27 27 0.36% 0.42%
C 7542 6422 1643 1643 21.78% 25.58%
D 7542 6423 50 50 0.66% 0.78%

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 7 64 278197 1614.07 696 679 171.9
A 3 128 50160 287.79 696 679 171.9
A 3 94 20914 117.69 696 679 171.9
B 5 185 137834 940.31 687 663 145.9
B 0 63 33432 224.63 687 663 145.9
B 7 252 33323 223.89 687 663 145.9
C 15 224 5777097 37363.59 563 559 154.6
C 1 16 65781 421.87 563 559 154.6
C 6 223 51509 329.55 563 559 154.6
D 12 110 806628 4266.2 662 632 188.9
D 8 240 81377 427.39 662 632 188.9
D 3 12 53159 278.03 662 632 188.9

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