ASTROSAT CZTI

Data Quality Report

Orbit 23971

Creation date: 2024-06-27T19:00:38.297525
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_001T04_9000003552_23971cztM0_level2.evt modeM0/AS1A07_001T04_9000003552_23971cztM0_level2_quad_clean.evt
Size (bytes)304,185,60064,033,920
Size290.1 MB 61.1 MB
Events in quadrant A1,631,187473,200
Events in quadrant B1,675,136476,673
Events in quadrant C1,728,534438,409
Events in quadrant D3,959,912324,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067581
B069121
C070941
D0138851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3175722.267717%
B3175631.984252%
C31751073.370079%
D3175126439.811024%

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 4455 3176 0 0 0.00% 0.00%
B 4455 3176 0 0 0.00% 0.00%
C 4455 3176 22 22 0.49% 0.69%
D 4454 3175 694 694 15.58% 21.86%

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 5554 59.46 423 415 86.4
A 0 226 3724 38.29 423 415 86.4
A 3 137 3549 36.26 423 415 86.4
B 4 200 30406 379.7 417 406 79.0
B 12 111 9018 108.99 417 406 79.0
B 11 111 7859 94.33 417 406 79.0
C 0 10 111015 1221.55 393 395 90.6
C 14 238 64220 704.81 393 395 90.6
C 7 221 17111 184.59 393 395 90.6
D 12 218 2200190 28328.89 313 303 77.7
D 2 82 207236 2664.77 313 303 77.7
D 12 250 137958 1772.64 313 303 77.7

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