ASTROSAT CZTI

Data Quality Report

Orbit 57940

Creation date: 2026-06-13T17:25:40.009236
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_031T01_9000006584_57940cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57940cztM0_level2_quad_clean.evt
Size (bytes)1,087,908,480264,600,000
Size1.0 GB 252.3 MB
Events in quadrant A8,328,3541,729,373
Events in quadrant B9,369,2731,838,435
Events in quadrant C11,805,2701,608,180
Events in quadrant D9,319,6441,548,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385023
B0412773
C0481293
D0411993

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186813451.846796%
B186816813.645415%
C186828794.705064%
D186823822.044749%

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 20106 18684 7 7 0.03% 0.04%
B 20106 18684 141 141 0.70% 0.75%
C 20107 18685 511 511 2.54% 2.73%
D 20107 18685 103 103 0.51% 0.55%

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 13 248 74239 141.68 2067 2011 509.8
A 4 159 59324 112.42 2067 2011 509.8
A 3 245 57460 108.76 2067 2011 509.8
B 3 238 605959 1390.19 2015 1935 434.5
B 10 247 174899 398.09 2015 1935 434.5
B 4 201 123661 280.16 2015 1935 434.5
C 15 224 3363085 6257.04 1971 1950 537.2
C 12 252 307582 568.96 1971 1950 537.2
C 1 16 185363 341.44 1971 1950 537.2
D 2 249 369203 660.25 1994 1912 556.3
D 12 110 290158 518.16 1994 1912 556.3
D 12 251 207476 369.53 1994 1912 556.3

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