ASTROSAT CZTI

Data Quality Report

Orbit 26922

Creation date: 2024-06-27T19:34:31.909215
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/AS1A09_134T01_9000003896_26922cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26922cztM0_level2_quad_clean.evt
Size (bytes)834,822,72069,050,880
Size796.1 MB 65.9 MB
Events in quadrant A13,583,320108,917
Events in quadrant B4,395,592534,283
Events in quadrant C3,358,095518,689
Events in quadrant D3,530,703499,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0444850
B0168560
C0135760
D0144520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6133568392.662645%
B61332373.864340%
C6133550.896788%
D6133570.929398%

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 7482 6132 4762 4762 63.65% 77.66%
B 7483 6134 125 125 1.67% 2.04%
C 7483 6134 1 1 0.01% 0.02%
D 7483 6134 34 34 0.45% 0.55%

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 14 235 12419268 224355.53 272 268 55.4
A 4 2 59730 1074.21 272 268 55.4
A 8 192 32934 590.13 272 268 55.4
B 0 189 928315 6070.01 831 814 152.8
B 15 33 132848 864.09 831 814 152.8
B 0 229 22344 140.9 831 814 152.8
C 14 238 132992 711.47 808 814 185.8
C 0 207 49636 262.79 808 814 185.8
C 2 16 16357 83.66 808 814 185.8
D 7 80 230491 1208.2 798 781 190.1
D 2 250 171062 895.62 798 781 190.1
D 11 176 31912 163.74 798 781 190.1

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