ASTROSAT CZTI

Data Quality Report

Orbit 20220108_A11_058T01_9000004854_level2

Creation date: 2022-01-10T17:19:26.691497
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/AS1A11_058T01_9000004854cztM0_level2_bc.evt modeM0/AS1A11_058T01_9000004854cztM0_level2_quad_clean.evt
Size (bytes)1,312,704,000472,849,920
Size1.2 GB 450.9 MB
Events in quadrant A7,569,5553,351,816
Events in quadrant B8,214,3373,305,827
Events in quadrant C7,084,3813,182,724
Events in quadrant D15,304,1722,883,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544940
B0585980
C0513020
D0869430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232291730.744759%
B232297913.405226%
C232292331.003057%
D23229294612.682423%

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 33389 23230 67 67 0.20% 0.29%
B 33389 23228 98 98 0.29% 0.42%
C 33389 23229 34 34 0.10% 0.15%
D 33389 23226 228 228 0.68% 0.98%

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 15 169 2247076 7678.62 1343 1331 292.5
A 14 238 55416 184.93 1343 1331 292.5
A 10 83 45170 149.89 1343 1331 292.5
B 5 172 1933074 7434.12 1320 1298 259.9
B 3 112 349218 1338.91 1320 1298 259.9
B 0 229 205717 786.67 1320 1298 259.9
C 15 214 969459 3382.11 1261 1258 286.3
C 0 10 681645 2376.72 1261 1258 286.3
C 3 233 357977 1246.09 1261 1258 286.3
D 8 195 4005307 12641.02 1209 1185 316.8
D 7 238 1576373 4972.87 1209 1185 316.8
D 12 33 1324279 4177.01 1209 1185 316.8

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