ASTROSAT CZTI

Data Quality Report

Orbit 43617

Creation date: 2024-06-27T22:53:43.240094
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_095T02_9000005892_43617cztM0_level2.fits modeM0/AS1A12_095T02_9000005892_43617cztM0_level2_quad_clean.evt
Size (bytes)1,121,181,12081,731,520
Size1.0 GB 77.9 MB
Events in quadrant A7,670,978618,452
Events in quadrant B5,761,019719,299
Events in quadrant C14,766,124345,781
Events in quadrant D12,826,566352,624

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270671
B0213801
C0481548
D0423901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200178428.774194%
B620175612.191582%
C6200523184.370968%
D6200444971.758065%

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 7314 6199 1567 1567 21.42% 25.28%
B 7316 6201 597 597 8.16% 9.63%
C 7314 6199 5094 5094 69.65% 82.17%
D 7315 6200 4079 4079 55.76% 65.79%

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 0 50 3443921 26187.09 635 621 131.5
A 10 83 689822 5241.53 635 621 131.5
A 15 223 655776 4982.61 635 621 131.5
B 5 235 1880327 13880.2 705 684 135.4
B 4 206 435546 3211.23 705 684 135.4
B 0 155 176294 1296.79 705 684 135.4
C 15 174 4755137 55398.38 362 364 85.8
C 15 142 3992101 46508.16 362 364 85.8
C 15 126 1221990 14233.3 362 364 85.8
D 13 187 5963106 50379.12 414 397 118.4
D 4 216 865147 7306.3 414 397 118.4
D 4 235 632342 5339.32 414 397 118.4

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