ASTROSAT CZTI

Data Quality Report

Orbit 54531

Creation date: 2025-10-27T07:44:40.917175
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_127T09_9000006520_54531cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54531cztM0_level2_quad_clean.evt
Size (bytes)136,100,16024,704,640
Size129.8 MB 23.6 MB
Events in quadrant A826,383171,190
Events in quadrant B1,443,965163,041
Events in quadrant C1,737,360142,279
Events in quadrant D900,744151,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035571
B053651
C063001
D037851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1630261.595092%
B163027917.116564%
C163029518.098160%
D1631342.084611%

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 2805 1631 2 2 0.07% 0.12%
B 2805 1631 154 154 5.49% 9.44%
C 2805 1631 229 229 8.16% 14.04%
D 2806 1632 21 21 0.75% 1.29%

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 8 6 10310 198.91 201 196 50.8
A 4 3 8598 165.24 201 196 50.8
A 13 254 6400 122.01 201 196 50.8
B 5 185 630774 14756.91 193 186 42.7
B 10 247 16352 378.31 193 186 42.7
B 0 216 7714 176.17 193 186 42.7
C 4 5 878999 16789.38 185 183 52.3
C 12 252 44046 837.98 185 183 52.3
C 1 16 24172 458.3 185 183 52.3
D 3 224 36408 649.33 193 185 55.8
D 3 144 33347 594.46 193 185 55.8
D 6 239 30838 549.49 193 185 55.8

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