ASTROSAT CZTI

Data Quality Report

Orbit 19637

Creation date: 2024-06-27T18:05:03.040511
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_101T03_9000002920_19637cztM0_level2.evt modeM0/AS1A05_101T03_9000002920_19637cztM0_level2_quad_clean.evt
Size (bytes)114,468,48013,927,680
Size109.2 MB 13.3 MB
Events in quadrant A701,21783,959
Events in quadrant B838,83184,806
Events in quadrant C715,22179,942
Events in quadrant D1,115,85370,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028561
B033201
C028981
D042631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1370181.313869%
B1370614.452555%
C1370191.386861%
D13711289.336251%

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 2285 1371 0 0 0.00% 0.00%
B 2285 1371 14 14 0.61% 1.02%
C 2285 1371 2 2 0.09% 0.15%
D 2286 1371 104 104 4.55% 7.59%

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 0 226 1642 37.98 182 177 38.6
A 3 137 1536 35.23 182 177 38.6
A 13 254 1436 32.64 182 177 38.6
B 7 220 97092 2601.33 181 176 37.3
B 3 112 16417 435.93 181 176 37.3
B 0 198 6093 158.82 181 176 37.3
C 14 238 26795 633.08 171 172 42.1
C 5 112 10339 241.77 171 172 42.1
C 3 233 6162 142.44 171 172 42.1
D 1 52 337864 8010.78 166 161 42.2
D 7 238 110265 2611.82 166 161 42.2
D 1 20 36402 859.69 166 161 42.2

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