ASTROSAT CZTI

Data Quality Report

Orbit 42178

Creation date: 2024-06-27T22:37:48.494381
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_032T04_9000005766_42178cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42178cztM0_level2_quad_clean.evt
Size (bytes)656,593,920176,489,280
Size626.2 MB 168.3 MB
Events in quadrant A6,115,5311,172,335
Events in quadrant B5,213,9431,208,639
Events in quadrant C5,102,5261,153,258
Events in quadrant D7,018,5181,047,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246343
B0230773
C0222213
D0285023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110131351.225824%
B11013440.399528%
C1101460.054476%
D110143152.859996%

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 15134 11016 107 107 0.71% 0.97%
B 15134 11016 28 28 0.19% 0.25%
C 15135 11017 1 1 0.01% 0.01%
D 15135 11017 316 316 2.09% 2.87%

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 10 83 1021077 4140.06 1203 1180 246.3
A 15 222 172873 696.95 1203 1180 246.3
A 12 189 130283 524.07 1203 1180 246.3
B 0 229 187969 796.41 1197 1163 234.6
B 3 112 142376 602.03 1197 1163 234.6
B 5 255 125602 530.52 1197 1163 234.6
C 15 214 458467 1659.72 1177 1184 275.5
C 12 249 33173 116.11 1177 1184 275.5
C 7 220 25236 87.3 1177 1184 275.5
D 1 52 925280 3243.29 1167 1133 284.9
D 12 233 491559 1721.15 1167 1133 284.9
D 12 6 262381 916.85 1167 1133 284.9

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