ASTROSAT CZTI

Data Quality Report

Orbit 35709

Creation date: 2022-05-06T20:12:37.571073
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/AS1A09_029T01_9000005116_35709cztM0_level2.evt modeM0/AS1A09_029T01_9000005116_35709cztM0_level2_quad_clean.evt
Size (bytes)391,072,32084,611,520
Size373.0 MB 80.7 MB
Events in quadrant A2,687,756565,094
Events in quadrant B2,952,374563,907
Events in quadrant C3,063,306534,158
Events in quadrant D2,780,266528,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113163
B0120992
C0123262
D0117252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5290100.189036%
B5290921.739130%
C52901482.797732%
D5290240.453686%

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 7234 5291 0 0 0.00% 0.00%
B 7234 5291 60 60 0.83% 1.13%
C 7234 5291 112 112 1.55% 2.12%
D 7234 5291 22 22 0.30% 0.42%

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 150196 1148.84 650 640 130.2
A 7 48 17839 132.12 650 640 130.2
A 13 6 8183 57.94 650 640 130.2
B 5 172 261128 2160.5 632 618 120.6
B 5 255 129781 1071.19 632 618 120.6
B 0 189 24530 198.31 632 618 120.6
C 0 10 405264 2891.12 604 608 140.0
C 15 214 220753 1572.85 604 608 140.0
C 9 187 68970 488.42 604 608 140.0
D 2 153 85593 562.7 622 607 151.0
D 13 249 66219 434.42 622 607 151.0
D 2 250 60503 396.57 622 607 151.0

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