ASTROSAT CZTI

Data Quality Report

Orbit 19022

Creation date: 2024-06-27T17:58:11.299036
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/AS1A06_003T05_9000002830_19022cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19022cztM0_level2_quad_clean.evt
Size (bytes)550,416,96071,222,400
Size524.9 MB 67.9 MB
Events in quadrant A3,612,960432,977
Events in quadrant B3,602,763439,511
Events in quadrant C3,824,446413,601
Events in quadrant D5,164,561392,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150042
B0147562
C0155472
D0199292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68491412.058695%
B68491351.971091%
C68491452.117097%
D68494276.234487%

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 7684 6850 42 42 0.55% 0.61%
B 7684 6850 17 17 0.22% 0.25%
C 7684 6850 12 12 0.16% 0.18%
D 7684 6850 332 332 4.32% 4.85%

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 14 235 274929 1582.1 860 840 173.2
A 9 143 30325 170.19 860 840 173.2
A 0 226 7612 39.09 860 840 173.2
B 7 220 88423 534.2 860 839 164.0
B 3 112 36107 215.11 860 839 164.0
B 0 189 31360 186.16 860 839 164.0
C 3 233 503466 2605.71 819 824 192.9
C 14 238 126400 650.99 819 824 192.9
C 13 61 5749 25.53 819 824 192.9
D 1 52 1268539 6319.93 817 795 200.6
D 7 238 766041 3814.89 817 795 200.6
D 11 176 33647 163.77 817 795 200.6

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