ASTROSAT CZTI

Data Quality Report

Orbit 20201112_T03_263T01_9000003990_level2

Creation date: 2025-12-17T12:46:08.100814
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/AS1T03_263T01_9000003990cztM0_level2.fits modeM0/AS1T03_263T01_9000003990cztM0_level2_quad_clean.evt
Size (bytes)966,971,5201,001,220,480
Size922.2 MB 954.8 MB
Events in quadrant A6,001,1126,316,383
Events in quadrant B5,759,1826,200,128
Events in quadrant C5,888,0746,000,491
Events in quadrant D5,120,2705,291,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019380
B019380
C019380
D019380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02293000
B02243230
C02261070
D02388520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01650
C01650
D01650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9504415031.581373%
B9504433393.513110%
C9504424332.559867%
D9504430263.183789%

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 111570 95029 0 0 0.00% 0.00%
B 111570 94978 0 0 0.00% 0.00%
C 111570 95027 0 0 0.00% 0.00%
D 111570 94880 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 6547 13.5 1556 1463 376.6
A 14 204 5249 10.05 1556 1463 376.6
A 0 29 5002 9.4 1556 1463 376.6
B 2 9 4398 9.96 1518 1449 296.2
B 5 128 3714 7.65 1518 1449 296.2
B 5 232 3651 7.43 1518 1449 296.2
C 1 81 4870 8.7 1552 1458 392.3
C 1 80 4811 8.55 1552 1458 392.3
C 3 202 4561 7.91 1552 1458 392.3
D 4 246 4010 6.97 1458 1333 384.3
D 3 14 3634 5.99 1458 1333 384.3
D 6 38 3626 5.97 1458 1333 384.3

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