ASTROSAT CZTI

Data Quality Report

Orbit 46938

Creation date: 2024-06-27T23:29:40.654563
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/AS1A13_077T01_9000006286_46938cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46938cztM0_level2_quad_clean.evt
Size (bytes)573,713,28096,240,960
Size547.1 MB 91.8 MB
Events in quadrant A6,118,873656,409
Events in quadrant B7,608,902605,368
Events in quadrant C3,091,350652,160
Events in quadrant D3,963,733589,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224631
B0267361
C0133111
D0157481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58692704.600443%
B5870106618.160136%
C58701342.282794%
D58703035.161840%

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 7009 5869 22 22 0.31% 0.37%
B 7009 5869 900 900 12.84% 15.33%
C 7010 5870 60 60 0.86% 1.02%
D 7010 5870 172 172 2.45% 2.93%

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 3373316 24103.12 678 664 139.9
A 9 191 57349 405.11 678 664 139.9
A 13 248 19980 138.04 678 664 139.9
B 3 112 4627420 35931.77 649 630 128.8
B 4 171 120904 934.05 649 630 128.8
B 5 172 82205 633.51 649 630 128.8
C 14 254 271695 1701.56 670 673 159.3
C 12 2 162267 1014.53 670 673 159.3
C 9 54 16621 100.13 670 673 159.3
D 1 52 563031 3362.78 666 646 167.2
D 13 249 277504 1655.47 666 646 167.2
D 12 233 185906 1107.76 666 646 167.2

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