ASTROSAT CZTI

Data Quality Report

Orbit 40875

Creation date: 2024-06-27T22:21:37.786330
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/AS1A12_097T01_9000005574_40875cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40875cztM0_level2_quad_clean.evt
Size (bytes)392,702,40092,090,880
Size374.5 MB 87.8 MB
Events in quadrant A3,147,420616,373
Events in quadrant B2,699,248636,545
Events in quadrant C2,692,123611,649
Events in quadrant D5,552,882523,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128693
B0120742
C0116862
D0204382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5718190.332284%
B5718370.647079%
C5718100.174886%
D57184958.656873%

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 7270 5719 6 6 0.08% 0.10%
B 7270 5719 27 27 0.37% 0.47%
C 7270 5719 4 4 0.06% 0.07%
D 7270 5719 598 598 8.23% 10.46%

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 560760 4306.62 626 610 130.1
A 13 248 137434 1051.95 626 610 130.1
A 13 6 16051 118.72 626 610 130.1
B 15 85 176411 1427.05 622 603 123.2
B 0 229 36072 287.9 622 603 123.2
B 15 32 19689 154.92 622 603 123.2
C 15 214 243076 1686.72 611 614 143.7
C 0 10 25231 171.25 611 614 143.7
C 12 249 17362 116.51 611 614 143.7
D 12 79 2318357 15726.28 596 579 147.4
D 13 249 305686 2070.17 596 579 147.4
D 2 249 222419 1505.2 596 579 147.4

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