ASTROSAT CZTI

Data Quality Report

Orbit 05156

Creation date: 2024-06-27T14:52:05.403211
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/AS1G05_214T01_9000000652_05156cztM0_level2.evt modeM0/AS1G05_214T01_9000000652_05156cztM0_level2_quad_clean.evt
Size (bytes)500,883,84077,212,800
Size477.7 MB 73.6 MB
Events in quadrant A3,528,680457,975
Events in quadrant B3,696,383462,368
Events in quadrant C3,452,423469,476
Events in quadrant D3,989,395433,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155234
B0157763
C0153073
D0170713

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73872933.966428%
B73872733.695682%
C73871842.490862%
D73874095.536754%

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 7722 7389 29 29 0.38% 0.39%
B 7722 7389 9 9 0.12% 0.12%
C 7722 7389 0 0 0.00% 0.00%
D 7722 7389 151 151 1.96% 2.04%

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 50 94992 514.82 889 866 182.8
A 0 31 11343 57.3 889 866 182.8
A 12 194 8854 43.69 889 866 182.8
B 4 48 60886 344.98 898 875 174.0
B 4 80 44228 249.22 898 875 174.0
B 15 54 32990 184.62 898 875 174.0
C 1 16 39062 187.58 874 875 203.6
C 13 61 7047 30.32 874 875 203.6
C 14 67 3353 12.17 874 875 203.6
D 13 53 573564 2686.63 861 833 213.2
D 2 136 57346 265.1 861 833 213.2
D 10 15 29837 136.06 861 833 213.2

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