ASTROSAT CZTI

Data Quality Report

Orbit 19645

Creation date: 2024-06-27T18:05:09.731749
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_101T10_9000002924_19645cztM0_level2.evt modeM0/AS1A05_101T10_9000002924_19645cztM0_level2_quad_clean.evt
Size (bytes)546,157,440133,845,120
Size520.9 MB 127.6 MB
Events in quadrant A3,546,081902,175
Events in quadrant B3,495,590914,813
Events in quadrant C3,332,482896,129
Events in quadrant D5,677,090838,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153761
B0151311
C0147091
D0217691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72111892.620996%
B72121672.315585%
C72121832.537438%
D721277810.787576%

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 7701 7211 39 39 0.51% 0.54%
B 7702 7212 13 13 0.17% 0.18%
C 7702 7212 0 0 0.00% 0.00%
D 7702 7212 593 593 7.70% 8.22%

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 9 143 164745 971.22 842 823 168.8
A 5 16 128768 758.06 842 823 168.8
A 4 2 7606 40.19 842 823 168.8
B 3 112 97451 615.96 837 815 156.9
B 4 216 33191 206.37 837 815 156.9
B 0 198 23483 144.49 837 815 156.9
C 14 238 127912 676.61 818 821 187.8
C 3 233 11784 58.36 818 821 187.8
C 13 61 5651 25.71 818 821 187.8
D 7 238 1344123 6925.98 804 779 194.0
D 1 52 1144324 5895.86 804 779 194.0
D 2 16 59503 302.77 804 779 194.0

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