ASTROSAT CZTI

Data Quality Report

Orbit 20943

Creation date: 2024-06-27T18:21:29.684795
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_088T05_9000003088_20943cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20943cztM0_level2_quad_clean.evt
Size (bytes)454,394,88058,043,520
Size433.3 MB 55.4 MB
Events in quadrant A2,957,102350,998
Events in quadrant B3,428,306350,071
Events in quadrant C2,964,685336,234
Events in quadrant D4,021,141318,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012773576
B014453653
C012789561
D016513978

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01224
B01224
C01228
D01224

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5744500.870474%
B57411462.543111%
C5761641.110918%
D57132584.516016%

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 7284 5885 3 3 0.04% 0.05%
B 7283 5886 45 45 0.62% 0.76%
C 7284 5909 0 0 0.00% 0.00%
D 7286 5901 217 217 2.98% 3.68%

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 15 174 9201 55.29 765 752 152.8
A 5 16 7839 46.37 765 752 152.8
A 0 226 6575 38.1 765 752 152.8
B 7 220 326190 2288.92 763 745 142.2
B 0 190 30493 209.22 763 745 142.2
B 0 229 27207 186.11 763 745 142.2
C 14 238 116147 689.83 726 733 167.3
C 3 233 14591 82.83 726 733 167.3
C 13 61 5168 26.51 726 733 167.3
D 9 1 666363 3832.58 718 698 173.7
D 5 222 289937 1665.3 718 698 173.7
D 1 52 249813 1434.28 718 698 173.7

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