ASTROSAT CZTI

Data Quality Report

Orbit 18198

Creation date: 2024-06-27T17:46:36.542116
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_160T02_9000002710_18198cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18198cztM0_level2_quad_clean.evt
Size (bytes)591,981,12081,610,560
Size564.6 MB 77.8 MB
Events in quadrant A3,741,873496,430
Events in quadrant B3,915,731500,469
Events in quadrant C4,108,228482,955
Events in quadrant D5,651,724467,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159672
B0164382
C0169722
D0217602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75371582.096325%
B75382052.719554%
C75383154.178827%
D75385347.084107%

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 7540 8 8 0.09% 0.11%
B 8688 7541 9 9 0.10% 0.12%
C 8688 7541 63 63 0.73% 0.84%
D 8688 7541 330 330 3.80% 4.38%

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 15 174 57664 292.91 955 933 193.7
A 4 2 12174 58.04 955 933 193.7
A 0 226 8417 38.64 955 933 193.7
B 7 220 88901 476.9 947 924 184.5
B 0 229 23600 122.92 947 924 184.5
B 12 111 21495 111.51 947 924 184.5
C 4 254 420924 1963.63 906 908 213.9
C 14 238 138220 641.95 906 908 213.9
C 3 233 9886 41.97 906 908 213.9
D 5 222 1020327 4527.26 918 891 225.2
D 7 238 962729 4271.47 918 891 225.2
D 1 52 103057 453.71 918 891 225.2

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