ASTROSAT CZTI

Data Quality Report

Orbit 54082

Creation date: 2025-09-27T02:30:48.911666
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_041T01_9000006510_54082cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54082cztM0_level2_quad_clean.evt
Size (bytes)574,971,84088,986,240
Size548.3 MB 84.9 MB
Events in quadrant A3,163,303632,259
Events in quadrant B4,886,225623,315
Events in quadrant C3,965,941590,781
Events in quadrant D8,764,316395,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143242
B0191682
C0163936
D0305352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64851141.757903%
B648571911.087124%
C64842894.457125%
D6484209932.371993%

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 7555 6486 90 90 1.19% 1.39%
B 7555 6486 610 610 8.07% 9.40%
C 7554 6485 252 252 3.34% 3.89%
D 7554 6485 1606 1606 21.26% 24.76%

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 3 14 209553 1218.9 689 673 171.4
A 15 174 127779 741.72 689 673 171.4
A 0 8 51353 295.74 689 673 171.4
B 5 236 1749090 12707.02 644 623 137.6
B 15 20 197923 1433.88 644 623 137.6
B 0 213 171709 1243.37 644 623 137.6
C 9 38 584307 3164.64 674 668 184.4
C 15 233 203084 1097.55 674 668 184.4
C 12 249 167200 902.98 674 668 184.4
D 11 176 4304712 29257.51 521 497 147.1
D 8 176 1570183 10669.8 521 497 147.1
D 10 199 293424 1991.14 521 497 147.1

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