ASTROSAT CZTI

Data Quality Report

Orbit 41639

Creation date: 2024-06-27T22:31:00.540931
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_035T02_9000005680_41639cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41639cztM0_level2_quad_clean.evt
Size (bytes)220,973,76045,146,880
Size210.7 MB 43.1 MB
Events in quadrant A1,473,697310,287
Events in quadrant B1,236,834315,810
Events in quadrant C1,604,915290,897
Events in quadrant D3,640,988246,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061831
B057891
C065691
D0128551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A284980.280800%
B284920.070200%
C2850973.403509%
D285041814.666667%

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 4312 2850 3 3 0.07% 0.11%
B 4312 2850 1 1 0.02% 0.04%
C 4313 2851 96 96 2.23% 3.37%
D 4313 2850 429 429 9.95% 15.05%

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 10 83 270353 4334.69 299 292 62.3
A 13 248 38209 608.6 299 292 62.3
A 2 79 5970 91.14 299 292 62.3
B 0 190 23602 396.47 298 289 58.8
B 5 255 14491 241.52 298 289 58.8
B 0 189 13957 232.44 298 289 58.8
C 0 10 267407 3804.7 293 294 70.2
C 15 214 115144 1635.9 293 294 70.2
C 1 23 49293 697.93 293 294 70.2
D 13 249 1290823 18500.68 280 272 69.8
D 12 79 833740 11948.17 280 272 69.8
D 2 249 229285 3283.01 280 272 69.8

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