ASTROSAT CZTI

Data Quality Report

Orbit 53388

Creation date: 2025-08-11T09:49:13.172647
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/AS1C09_011T09_9000006494_53388cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53388cztM0_level2_quad_clean.evt
Size (bytes)1,046,364,480107,040,960
Size997.9 MB 102.1 MB
Events in quadrant A5,802,275812,452
Events in quadrant B8,911,809746,921
Events in quadrant C17,674,668328,417
Events in quadrant D5,664,498742,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233151
B0326681
C0584025
D0232301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87893353.811583%
B8789172919.672318%
C8788536561.049158%
D87882582.935822%

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 8849 8790 244 244 2.76% 2.78%
B 8849 8790 1033 1033 11.67% 11.75%
C 8847 8787 5088 5088 57.51% 57.90%
D 8848 8789 228 228 2.58% 2.59%

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 15 174 703901 3090.6 922 902 227.5
A 0 8 467359 2050.69 922 902 227.5
A 14 235 361361 1584.69 922 902 227.5
B 4 206 3005921 16407.52 862 832 183.2
B 4 171 799266 4359.38 862 832 183.2
B 2 249 517839 2822.81 862 832 183.2
C 1 241 12472350 83499.78 546 542 149.4
C 15 224 1461157 9778.94 546 542 149.4
C 15 178 1131172 7569.66 546 542 149.4
D 2 249 614969 2386.28 905 865 257.3
D 3 12 550859 2137.16 905 865 257.3
D 0 18 259913 1006.6 905 865 257.3

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