ASTROSAT CZTI

Data Quality Report

Orbit 07265

Creation date: 2024-06-27T15:17:42.853775
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/AS1A02_155T01_9000000994_07265cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07265cztM0_level2_quad_clean.evt
Size (bytes)442,056,960105,747,840
Size421.6 MB 100.8 MB
Events in quadrant A3,064,656693,035
Events in quadrant B3,390,504719,309
Events in quadrant C3,400,410696,408
Events in quadrant D3,105,769656,116

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131853
B0141762
C0141872
D0134842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6271510.813267%
B62711282.041142%
C6271380.605964%
D6271390.621910%

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 7591 6271 1 1 0.01% 0.02%
B 7591 6271 53 53 0.70% 0.85%
C 7591 6272 9 9 0.12% 0.14%
D 7591 6272 17 17 0.22% 0.27%

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 15 53336 335.43 774 759 156.7
A 15 174 19920 122.24 774 759 156.7
A 0 226 7479 42.87 774 759 156.7
B 4 239 141426 950.56 790 773 148.0
B 4 81 82483 552.21 790 773 148.0
B 0 214 46662 310.13 790 773 148.0
C 7 247 391647 2214.11 763 768 176.5
C 9 68 28680 158.11 763 768 176.5
C 13 61 6083 30.11 763 768 176.5
D 2 216 113757 614.79 748 725 183.9
D 2 14 82161 442.94 748 725 183.9
D 12 233 26956 142.67 748 725 183.9

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