ASTROSAT CZTI

Data Quality Report

Orbit 20171027_C03_012T01_9000001642_level2

Creation date: 2025-11-18T00:37:47.280151
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/AS1C03_012T01_9000001642cztM0_level2.fits modeM0/AS1C03_012T01_9000001642cztM0_level2_quad_clean.evt
Size (bytes)309,752,640320,267,520
Size295.4 MB 305.4 MB
Events in quadrant A1,872,8181,988,457
Events in quadrant B1,843,8222,035,797
Events in quadrant C1,914,5441,938,203
Events in quadrant D1,508,2741,498,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0878660
B0824350
C0679650
D01207820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3258115264.683711%
B3258113494.140450%
C325811950.598508%
D32581521316.000123%

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 40316 32566 0 0 0.00% 0.00%
B 40316 32580 0 0 0.00% 0.00%
C 40316 32578 0 0 0.00% 0.00%
D 40316 32501 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 14 188 1983 12.58 486 457 121.3
A 0 29 1805 11.11 486 457 121.3
A 14 204 1676 10.05 486 457 121.3
B 2 9 1614 11.86 486 464 96.9
B 2 8 1218 7.78 486 464 96.9
B 12 226 1217 7.77 486 464 96.9
C 1 80 1423 7.19 505 471 132.4
C 1 81 1387 6.91 505 471 132.4
C 1 65 1303 6.28 505 471 132.4
D 6 231 1166 6.61 430 391 117.2
D 10 189 1096 6.02 430 391 117.2
D 4 160 1077 5.85 430 391 117.2

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