ASTROSAT CZTI

Data Quality Report

Orbit 30331

Creation date: 2024-06-27T20:13:49.388107
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/AS1A10_071T29_9000004358_30331cztM0_level2.evt modeM0/AS1A10_071T29_9000004358_30331cztM0_level2_quad_clean.evt
Size (bytes)652,783,68098,179,200
Size622.5 MB 93.6 MB
Events in quadrant A4,218,841605,846
Events in quadrant B6,494,910603,658
Events in quadrant C4,247,173587,144
Events in quadrant D4,233,959587,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179472
B0258792
C0179492
D0183172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84862953.476314%
B84874154.889832%
C84873003.534818%
D84871802.120891%

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 8906 8488 0 0 0.00% 0.00%
B 8907 8488 0 0 0.00% 0.00%
C 8907 8488 0 0 0.00% 0.00%
D 8907 8488 11 11 0.12% 0.13%

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 14 239 46312 207.05 1070 1043 218.6
A 5 203 30240 133.54 1070 1043 218.6
A 13 254 16675 71.5 1070 1043 218.6
B 6 159 2337897 11267.94 1051 1021 207.4
B 12 111 27469 127.53 1051 1021 207.4
B 11 111 24902 115.15 1051 1021 207.4
C 14 238 169252 688.37 1024 1027 244.4
C 3 233 50489 202.4 1024 1027 244.4
C 2 114 20280 78.78 1024 1027 244.4
D 2 250 123291 452.86 1032 1012 270.0
D 8 195 120516 442.58 1032 1012 270.0
D 2 234 34680 124.69 1032 1012 270.0

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