ASTROSAT CZTI

Data Quality Report

Orbit 53952

Creation date: 2025-09-18T08:30:13.882459
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_057T04_9000006508_53952cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53952cztM0_level2_quad_clean.evt
Size (bytes)713,537,28087,560,640
Size680.5 MB 83.5 MB
Events in quadrant A3,833,504671,507
Events in quadrant B3,876,591711,744
Events in quadrant C5,046,521615,932
Events in quadrant D13,105,635159,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164172
B0165552
C0200202
D0438572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70701401.980198%
B70702062.913720%
C70694886.903381%
D7069536975.951337%

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 7905 7071 53 53 0.67% 0.75%
B 7905 7071 52 52 0.66% 0.74%
C 7904 7070 356 356 4.50% 5.04%
D 7904 7069 3296 3296 41.70% 46.63%

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 12 115 366521 1903.52 777 760 192.1
A 15 174 143023 740.38 777 760 192.1
A 0 8 46143 236.19 777 760 192.1
B 0 213 304389 1817.28 770 743 167.1
B 0 155 291239 1738.57 770 743 167.1
B 10 245 93550 555.44 770 743 167.1
C 9 38 666274 3291.5 734 729 202.2
C 13 3 612635 3026.22 734 729 202.2
C 1 241 284904 1405.41 734 729 202.2
D 8 176 10594653 115421.16 314 300 91.8
D 2 172 311476 3390.14 314 300 91.8
D 5 113 305138 3321.09 314 300 91.8

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