ASTROSAT CZTI

Data Quality Report

Orbit 30910

Creation date: 2024-06-27T20:21:05.355487
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/AS1C06_007T01_9000004470_30910cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30910cztM0_level2_quad_clean.evt
Size (bytes)189,040,32027,506,880
Size180.3 MB 26.2 MB
Events in quadrant A1,109,240177,155
Events in quadrant B1,731,439177,621
Events in quadrant C1,281,593160,660
Events in quadrant D1,459,523166,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045191
B066601
C050911
D057151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20781647.892204%
B207822810.972089%
C207840619.538017%
D20781778.517806%

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 2313 2078 0 0 0.00% 0.00%
B 2313 2078 1 1 0.04% 0.05%
C 2313 2078 7 7 0.30% 0.34%
D 2313 2078 19 19 0.82% 0.91%

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 13 254 3504 52.9 287 279 61.0
A 3 137 3159 47.24 287 279 61.0
A 0 226 2463 35.83 287 279 61.0
B 6 159 556391 9892.74 275 267 56.2
B 0 155 22865 401.99 275 267 56.2
B 0 230 14293 249.5 275 267 56.2
C 14 238 99841 1562.1 258 258 63.7
C 14 254 80260 1254.94 258 258 63.7
C 0 10 72165 1127.96 258 258 63.7
D 8 195 250210 3657.77 278 270 68.3
D 2 250 109715 1601.68 278 270 68.3
D 12 233 24501 354.61 278 270 68.3

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