ASTROSAT CZTI

Data Quality Report

Orbit 19237

Creation date: 2024-06-27T18:00:29.866119
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/AS1C04_001T01_9000002846_19237cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19237cztM0_level2_quad_clean.evt
Size (bytes)458,487,360125,763,840
Size437.2 MB 119.9 MB
Events in quadrant A3,149,559834,930
Events in quadrant B3,216,397869,331
Events in quadrant C3,582,118851,143
Events in quadrant D3,515,987820,946

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134321
B0136211
C0147521
D0147611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6204801.289491%
B62041021.644101%
C62031532.466548%
D62031121.805578%

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 7529 6205 5 5 0.07% 0.08%
B 7529 6204 2 2 0.03% 0.03%
C 7528 6204 0 0 0.00% 0.00%
D 7528 6204 16 16 0.21% 0.26%

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 13 252 85802 530.42 795 779 160.3
A 13 254 8574 48.63 795 779 160.3
A 0 226 6788 37.49 795 779 160.3
B 0 190 30657 202.98 804 787 147.2
B 6 36 24587 161.73 804 787 147.2
B 12 111 16539 107.04 804 787 147.2
C 3 233 353756 1953.21 791 797 180.7
C 14 238 126368 694.89 791 797 180.7
C 0 207 15385 80.73 791 797 180.7
D 9 68 452320 2406.9 791 771 187.6
D 2 234 25823 133.54 791 771 187.6
D 15 145 17074 86.9 791 771 187.6

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