ASTROSAT CZTI

Data Quality Report

Orbit 41226

Creation date: 2024-06-27T22:26:11.480054
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/AS1T05_102T01_9000005634_41226cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41226cztM0_level2_quad_clean.evt
Size (bytes)271,391,04057,614,400
Size258.8 MB 54.9 MB
Events in quadrant A4,513,549305,739
Events in quadrant B1,626,032420,822
Events in quadrant C1,963,045401,428
Events in quadrant D1,671,877370,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159142
B070421
C079071
D071771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A347094527.233429%
B3470120.345821%
C3470140.403458%
D3470100.288184%

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 5323 3470 915 915 17.19% 26.37%
B 5324 3471 6 6 0.11% 0.17%
C 5324 3471 12 12 0.23% 0.35%
D 5324 3471 10 10 0.19% 0.29%

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 8 2835023 38313.05 354 346 74.0
A 10 83 257655 3477.75 354 346 74.0
A 12 189 29737 397.24 354 346 74.0
B 0 229 39245 494.62 400 389 78.6
B 15 35 13130 162.19 400 389 78.6
B 12 111 9807 119.89 400 389 78.6
C 9 54 233667 2521.8 394 397 92.5
C 15 214 148102 1596.79 394 397 92.5
C 0 10 42926 459.77 394 397 92.5
D 13 249 48113 480.35 398 386 99.4
D 8 230 30609 304.18 398 386 99.4
D 12 79 23642 234.06 398 386 99.4

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