ASTROSAT CZTI

Data Quality Report

Orbit 21322

Creation date: 2024-06-27T18:26:22.221416
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/AS1A05_037T01_9000003144_21322cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21322cztM0_level2_quad_clean.evt
Size (bytes)487,123,200114,598,080
Size464.6 MB 109.3 MB
Events in quadrant A3,468,883774,264
Events in quadrant B3,572,984778,376
Events in quadrant C3,361,360737,962
Events in quadrant D3,907,112725,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144442
B0148152
C0140582
D0159803

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519871.334561%
B65191021.564657%
C6519981.503298%
D6518801.227370%

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 7814 6519 0 0 0.00% 0.00%
B 7814 6520 13 13 0.17% 0.20%
C 7814 6520 0 0 0.00% 0.00%
D 7813 6518 24 24 0.31% 0.37%

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 10 253 32099 175.22 884 870 178.2
A 13 254 11201 57.97 884 870 178.2
A 5 16 8691 43.88 884 870 178.2
B 3 64 101521 620.87 866 847 162.1
B 0 190 29238 175.09 866 847 162.1
B 0 230 23319 138.59 866 847 162.1
C 14 238 132188 685.97 826 834 191.5
C 13 61 5954 26.74 826 834 191.5
C 0 10 5753 25.69 826 834 191.5
D 12 235 214833 1041.82 849 826 205.4
D 12 233 150082 726.6 849 826 205.4
D 13 153 93906 453.13 849 826 205.4

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