ASTROSAT CZTI

Data Quality Report

Orbit 30498

Creation date: 2024-06-27T20:16:02.955783
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/AS1A10_053T22_9000004384_30498cztM0_level2.evt modeM0/AS1A10_053T22_9000004384_30498cztM0_level2_quad_clean.evt
Size (bytes)578,756,16084,401,280
Size551.9 MB 80.5 MB
Events in quadrant A3,364,483555,408
Events in quadrant B5,018,952554,545
Events in quadrant C3,948,759512,812
Events in quadrant D4,785,349509,311

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135691
B0188651
C0155281
D0184291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6065711.170651%
B60661232.027695%
C60662223.659743%
D60662243.692713%

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 7350 6066 3 3 0.04% 0.05%
B 7351 6067 9 9 0.12% 0.15%
C 7351 6067 90 90 1.22% 1.48%
D 7351 6067 195 195 2.65% 3.21%

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 0 31 27209 156.45 857 845 168.5
A 12 96 14668 82.03 857 845 168.5
A 8 192 11894 65.57 857 845 168.5
B 6 159 1618006 10336.71 835 818 156.5
B 0 229 92265 584.51 835 818 156.5
B 15 36 21837 134.35 835 818 156.5
C 10 22 397684 2205.62 786 793 179.9
C 3 233 254771 1411.42 786 793 179.9
C 14 238 132425 731.51 786 793 179.9
D 13 104 1256506 6649.45 810 793 188.8
D 8 195 289021 1526.27 810 793 188.8
D 12 218 63955 334.47 810 793 188.8

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