ASTROSAT CZTI

Data Quality Report

Orbit 08672

Creation date: 2024-06-27T15:35:43.961226
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/AS1G07_024T01_9000001206_08672cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08672cztM0_level2_quad_clean.evt
Size (bytes)483,048,000131,751,360
Size460.7 MB 125.6 MB
Events in quadrant A3,540,398859,612
Events in quadrant B3,663,813893,763
Events in quadrant C3,174,531891,466
Events in quadrant D3,757,407840,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158383
B0160902
C0148392
D0165302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72401702.348066%
B72401421.961326%
C7240300.414365%
D72401171.616022%

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 9320 7240 106 106 1.14% 1.46%
B 9320 7240 39 39 0.42% 0.54%
C 9320 7242 0 0 0.00% 0.00%
D 9320 7242 84 84 0.90% 1.16%

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 0 254 251924 1514.62 808 789 165.8
A 15 174 80903 483.17 808 789 165.8
A 13 251 65421 389.8 808 789 165.8
B 10 16 302190 1932.95 831 808 155.9
B 0 219 23289 144.18 831 808 155.9
B 0 231 16930 103.4 831 808 155.9
C 1 16 7327 35.01 810 813 186.1
C 13 61 6153 28.7 810 813 186.1
C 8 222 3054 12.04 810 813 186.1
D 12 233 350192 1811.39 794 769 192.9
D 2 152 170490 879.82 794 769 192.9
D 7 71 75763 388.76 794 769 192.9

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