ASTROSAT CZTI

Data Quality Report

Orbit 31256

Creation date: 2024-06-27T20:25:42.846444
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/AS1A10_073T02_9000004522_31256cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31256cztM0_level2_quad_clean.evt
Size (bytes)664,044,480111,726,720
Size633.3 MB 106.6 MB
Events in quadrant A3,707,836736,474
Events in quadrant B6,550,286715,186
Events in quadrant C4,238,956702,792
Events in quadrant D5,095,070695,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159271
B0250393
C0174131
D0201531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7664460.600209%
B76643634.736430%
C76642082.713987%
D76641912.492171%

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 7879 7665 0 0 0.00% 0.00%
B 7879 7665 114 114 1.45% 1.49%
C 7879 7665 5 5 0.06% 0.07%
D 7879 7665 99 99 1.26% 1.29%

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 14941 72.08 958 936 194.3
A 3 137 9681 45.01 958 936 194.3
A 0 226 8152 37.14 958 936 194.3
B 6 159 2100021 11692.02 933 909 179.5
B 12 18 463681 2577.63 933 909 179.5
B 5 172 131574 727.8 933 909 179.5
C 3 233 355199 1677.17 903 910 211.2
C 14 238 156609 737.06 903 910 211.2
C 0 10 140083 658.83 903 910 211.2
D 8 195 935240 3928.39 908 892 237.8
D 12 79 472095 1981.14 908 892 237.8
D 2 250 131956 551.05 908 892 237.8

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