ASTROSAT CZTI

Data Quality Report

Orbit 22618

Creation date: 2024-06-27T18:43:38.163354
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/AS1A07_049T01_9000003358_22618cztM0_level2.evt modeM0/AS1A07_049T01_9000003358_22618cztM0_level2_quad_clean.evt
Size (bytes)475,611,84085,478,400
Size453.6 MB 81.5 MB
Events in quadrant A3,361,431533,248
Events in quadrant B3,453,943539,435
Events in quadrant C3,408,772515,991
Events in quadrant D3,699,532507,654

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144662
B0147032
C0145882
D0155452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7062791.118663%
B70631131.599887%
C70631241.755628%
D70631151.628203%

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 8687 7064 0 0 0.00% 0.00%
B 8688 7065 5 5 0.06% 0.07%
C 8688 7065 1 1 0.01% 0.01%
D 8688 7065 38 38 0.44% 0.54%

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 13 254 11433 59.88 871 851 176.7
A 3 137 7696 38.73 871 851 176.7
A 0 226 7479 37.5 871 851 176.7
B 0 197 25860 148.44 866 842 168.5
B 12 111 21002 119.61 866 842 168.5
B 11 111 18451 104.48 866 842 168.5
C 14 238 129528 660.77 832 837 194.8
C 10 22 13003 62.47 832 837 194.8
C 10 222 12204 58.36 832 837 194.8
D 1 52 246169 1191.75 842 816 205.9
D 2 136 116268 560.78 842 816 205.9
D 1 239 75138 361.0 842 816 205.9

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