ASTROSAT CZTI

Data Quality Report

Orbit 19633

Creation date: 2024-06-27T18:05:00.022979
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_012T01_9000002918_19633cztM0_level2.evt modeM0/AS1A05_012T01_9000002918_19633cztM0_level2_quad_clean.evt
Size (bytes)522,020,16093,625,920
Size497.8 MB 89.3 MB
Events in quadrant A3,347,766602,155
Events in quadrant B3,753,824599,085
Events in quadrant C3,436,796576,546
Events in quadrant D4,787,366561,222

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147531
B0158131
C0147141
D0190411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7128761.066218%
B71281311.837823%
C71281101.543210%
D71281702.384961%

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 7448 7128 1 1 0.01% 0.01%
B 7448 7129 19 19 0.26% 0.27%
C 7448 7129 0 0 0.00% 0.00%
D 7448 7129 137 137 1.84% 1.92%

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 5 16 30970 172.49 858 839 174.7
A 11 29 8644 44.68 858 839 174.7
A 0 226 7472 37.97 858 839 174.7
B 3 112 244160 1479.2 847 826 164.5
B 7 220 87086 524.37 847 826 164.5
B 4 216 38228 227.36 847 826 164.5
C 14 238 126970 653.37 815 820 193.1
C 3 233 113477 583.49 815 820 193.1
C 8 208 9328 44.07 815 820 193.1
D 1 52 741974 3617.98 832 808 204.9
D 1 20 465031 2266.09 832 808 204.9
D 7 238 226562 1102.01 832 808 204.9

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