ASTROSAT CZTI

Data Quality Report

Orbit 24436

Creation date: 2024-06-27T19:06:00.472834
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/AS1T03_183T01_9000003606_24436cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24436cztM0_level2_quad_clean.evt
Size (bytes)491,025,600117,224,640
Size468.3 MB 111.8 MB
Events in quadrant A3,181,188780,988
Events in quadrant B3,366,452802,296
Events in quadrant C3,236,953758,426
Events in quadrant D4,614,602724,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141762
B0145052
C0141192
D0184462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6948160.230282%
B6948480.690846%
C6948510.734024%
D69481512.173287%

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 7758 6949 3 3 0.04% 0.04%
B 7758 6949 10 10 0.13% 0.14%
C 7758 6949 0 0 0.00% 0.00%
D 7758 6949 115 115 1.48% 1.65%

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 4 2 34108 204.48 816 799 162.9
A 13 254 11658 66.66 816 799 162.9
A 3 137 7310 39.97 816 799 162.9
B 3 64 109394 702.6 824 804 154.6
B 0 219 20971 130.48 824 804 154.6
B 12 111 18737 116.03 824 804 154.6
C 14 238 128677 694.61 794 799 184.1
C 13 61 5574 25.94 794 799 184.1
C 3 233 4982 22.72 794 799 184.1
D 8 195 628539 3325.98 787 763 188.7
D 12 218 619057 3275.74 787 763 188.7
D 1 52 306449 1619.53 787 763 188.7

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