ASTROSAT CZTI

Data Quality Report

Orbit 37554

Creation date: 2024-06-27T21:41:28.157205
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/AS1T05_051T01_9000005334_37554cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37554cztM0_level2_quad_clean.evt
Size (bytes)430,436,16073,494,720
Size410.5 MB 70.1 MB
Events in quadrant A3,016,899455,932
Events in quadrant B2,932,389464,345
Events in quadrant C2,979,601466,282
Events in quadrant D3,714,380435,101

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123673
B0124142
C0122822
D0150222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5773450.779491%
B5773570.987355%
C5773530.918067%
D57732744.746232%

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 7176 5774 36 36 0.50% 0.62%
B 7176 5774 45 45 0.63% 0.78%
C 7176 5774 36 36 0.50% 0.62%
D 7176 5774 267 267 3.72% 4.62%

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 10 83 324579 2455.84 652 638 131.9
A 15 222 131082 988.91 652 638 131.9
A 13 6 31851 236.63 652 638 131.9
B 0 221 83829 658.8 651 635 126.3
B 15 85 63472 497.6 651 635 126.3
B 5 172 46869 366.12 651 635 126.3
C 15 214 249671 1674.61 636 639 148.7
C 0 10 134782 902.04 636 639 148.7
C 14 254 57726 383.88 636 639 148.7
D 2 249 563836 3673.2 623 605 153.3
D 13 249 242872 1579.98 623 605 153.3
D 12 233 234510 1525.44 623 605 153.3

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