ASTROSAT CZTI

Data Quality Report

Orbit 20171229_G08_010T03_9000001800_level2

Creation date: 2025-11-19T06:31:54.404569
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_010T03_9000001800cztM0_level2.fits modeM0/AS1G08_010T03_9000001800cztM0_level2_quad_clean.evt
Size (bytes)370,621,440360,097,920
Size353.5 MB 343.4 MB
Events in quadrant A2,246,7042,160,676
Events in quadrant B2,092,1042,077,486
Events in quadrant C2,212,2102,040,218
Events in quadrant D1,896,7801,851,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08280
B08280
C08280
D08280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0909740
B01067920
C0841340
D01047390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A403945971.477942%
B4039426696.607417%
C403942610.646136%
D4039416464.074863%

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 45274 40393 0 0 0.00% 0.00%
B 45274 40267 0 0 0.00% 0.00%
C 45274 40394 0 0 0.00% 0.00%
D 45273 40313 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 2159 11.02 585 548 146.2
A 7 110 1817 8.68 585 548 146.2
A 9 19 1747 8.2 585 548 146.2
B 2 9 1858 11.84 552 525 112.6
B 3 17 1435 8.08 552 525 112.6
B 14 254 1383 7.62 552 525 112.6
C 1 80 1623 7.08 584 542 152.6
C 12 241 1586 6.84 584 542 152.6
C 1 81 1582 6.82 584 542 152.6
D 3 14 1441 6.58 541 493 144.1
D 6 231 1342 5.89 541 493 144.1
D 7 3 1329 5.8 541 493 144.1

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