ASTROSAT CZTI

Data Quality Report

Orbit 45026

Creation date: 2024-06-27T23:09:08.589624
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/AS1A13_020T01_9000006040_45026cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45026cztM0_level2_quad_clean.evt
Size (bytes)524,442,240117,743,040
Size500.1 MB 112.3 MB
Events in quadrant A5,916,176783,852
Events in quadrant B4,189,663806,154
Events in quadrant C3,260,321800,534
Events in quadrant D5,518,958700,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219652
B0168632
C0142582
D0211112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68083074.509401%
B68083354.920682%
C6808941.380729%
D68074196.155428%

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 7903 6810 2 2 0.03% 0.03%
B 7903 6810 71 71 0.90% 1.04%
C 7903 6810 3 3 0.04% 0.04%
D 7902 6809 199 199 2.52% 2.92%

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 10 83 2658912 15478.01 830 813 171.7
A 0 243 26021 146.79 830 813 171.7
A 15 174 10182 54.56 830 813 171.7
B 5 255 166116 1021.63 824 800 161.8
B 0 155 163059 1002.74 824 800 161.8
B 4 171 152353 936.58 824 800 161.8
C 1 3 26979 135.6 823 831 192.8
C 15 208 11048 52.98 823 831 192.8
C 3 233 9176 43.28 823 831 192.8
D 13 174 393178 1917.0 807 784 204.7
D 2 249 366424 1786.3 807 784 204.7
D 5 235 332966 1622.84 807 784 204.7

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