ASTROSAT CZTI

Data Quality Report

Orbit 39696

Creation date: 2024-06-27T22:07:51.649663
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/AS1A12_051T01_9000005490_39696cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39696cztM0_level2_quad_clean.evt
Size (bytes)114,235,20017,824,320
Size108.9 MB 17.0 MB
Events in quadrant A2,285,22480,936
Events in quadrant B543,421130,560
Events in quadrant C706,940124,965
Events in quadrant D601,605117,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075741
B024201
C028641
D025901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113757050.131926%
B113740.351803%
C113750.439754%
D113710.087951%

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 1137 1137 588 588 51.72% 51.72%
B 1137 1137 5 5 0.44% 0.44%
C 1137 1137 5 5 0.44% 0.44%
D 1137 1137 0 0 0.00% 0.00%

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 15 222 1698222 72139.72 105 103 23.5
A 10 83 130708 5548.38 105 103 23.5
A 13 248 28665 1213.37 105 103 23.5
B 5 32 20471 808.32 120 117 25.2
B 0 190 15689 618.42 120 117 25.2
B 4 170 10803 424.38 120 117 25.2
C 9 187 128725 4455.18 115 115 28.9
C 15 208 54537 1885.23 115 115 28.9
C 15 214 50514 1745.87 115 115 28.9
D 13 174 59829 2001.08 115 111 29.8
D 12 233 33665 1124.36 115 111 29.8
D 13 249 28872 963.75 115 111 29.8

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