ASTROSAT CZTI

Data Quality Report

Orbit 08887

Creation date: 2024-06-27T15:38:35.794907
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/AS1A03_092T01_9000001240_08887cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08887cztM0_level2_quad_clean.evt
Size (bytes)117,696,96031,000,320
Size112.2 MB 29.6 MB
Events in quadrant A894,608200,603
Events in quadrant B833,915211,597
Events in quadrant C772,684207,292
Events in quadrant D945,342194,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01914
B0158
C01913
D01811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011985
B012187
C012082
D011886

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01358610010
B0125378984
C0122698767
D01402510256

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1623171.047443%
B1701120.705467%
C171840.232829%
D1654150.906892%

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 6360 2151 1 1 0.02% 0.05%
B 6357 2226 1 1 0.02% 0.04%
C 6352 2265 0 0 0.00% 0.00%
D 6352 2186 5 5 0.08% 0.23%

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 8 5 111625 2672.33 198 194 41.7
A 0 128 9339 219.32 198 194 41.7
A 15 174 4492 103.07 198 194 41.7
B 0 214 12458 302.13 206 202 40.6
B 4 80 6504 155.35 206 202 40.6
B 12 111 4008 93.82 206 202 40.6
C 13 61 1455 27.09 197 198 46.4
C 12 4 984 16.94 197 198 46.4
C 1 3 634 9.4 197 198 46.4
D 8 195 99635 1962.92 191 186 50.7
D 1 52 25246 494.63 191 186 50.7
D 12 233 21980 430.17 191 186 50.7

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