ASTROSAT CZTI

Data Quality Report

Orbit 20171108_G08_010T01_9000001672_level2

Creation date: 2025-11-18T06:10:50.766216
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/AS1G08_010T01_9000001672cztM0_level2.fits modeM0/AS1G08_010T01_9000001672cztM0_level2_quad_clean.evt
Size (bytes)323,965,440320,405,760
Size309.0 MB 305.6 MB
Events in quadrant A2,003,9121,983,312
Events in quadrant B1,885,8001,861,128
Events in quadrant C1,943,6041,849,386
Events in quadrant D1,689,4921,721,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0716410
B0914500
C0689100
D0768820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332974671.402529%
B3329720856.261825%
C332972930.879959%
D332977682.306514%

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 40211 33295 0 0 0.00% 0.00%
B 40211 33285 0 0 0.00% 0.00%
C 40211 33296 0 0 0.00% 0.00%
D 40211 33294 0 0 0.00% 0.00%

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 29 2033 11.88 521 488 130.0
A 7 110 1651 8.94 521 488 130.0
A 0 30 1508 7.84 521 488 130.0
B 2 9 1645 11.53 498 476 101.4
B 3 17 1264 7.77 498 476 101.4
B 2 8 1260 7.73 498 476 101.4
C 1 80 1422 6.99 513 479 135.0
C 1 81 1419 6.97 513 479 135.0
C 2 191 1356 6.5 513 479 135.0
D 3 14 1245 6.21 482 439 129.9
D 6 231 1223 6.04 482 439 129.9
D 10 189 1199 5.85 482 439 129.9

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