ASTROSAT CZTI

Data Quality Report

Orbit 21609

Creation date: 2024-06-27T18:30:10.023904
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/AS1A05_094T01_9000003204_21609cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21609cztM0_level2_quad_clean.evt
Size (bytes)293,616,00067,426,560
Size280.0 MB 64.3 MB
Events in quadrant A2,012,762444,514
Events in quadrant B2,105,452459,722
Events in quadrant C2,043,575441,147
Events in quadrant D2,459,875416,716

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08584183
B08953208
C08726189
D010173209

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0842
B0844
C0853
D0853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3969200.503905%
B3959220.555696%
C3964481.210898%
D3963661.665405%

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 7021 3985 0 0 0.00% 0.00%
B 7024 3975 2 2 0.03% 0.05%
C 7023 3984 0 0 0.00% 0.00%
D 7018 3976 13 13 0.19% 0.33%

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 15 174 5983 52.44 520 511 104.3
A 13 254 5097 43.95 520 511 104.3
A 0 226 4541 38.62 520 511 104.3
B 0 190 13554 133.43 523 511 97.8
B 0 219 11709 114.56 523 511 97.8
B 12 111 11413 111.53 523 511 97.8
C 14 238 80839 687.5 503 507 116.8
C 13 61 3518 25.77 503 507 116.8
C 7 221 1461 8.16 503 507 116.8
D 1 52 424961 3517.6 500 486 120.7
D 2 136 100500 828.81 500 486 120.7
D 14 35 15361 123.27 500 486 120.7

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