ASTROSAT CZTI

Data Quality Report

Orbit 20220212_A10_071T14_9000004924_level2

Creation date: 2026-01-01T00:51:50.154271
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/AS1A10_071T14_9000004924cztM0_level2.fits modeM0/AS1A10_071T14_9000004924cztM0_level2_quad_clean.evt
Size (bytes)285,036,480286,372,800
Size271.8 MB 273.1 MB
Events in quadrant A1,751,5301,723,506
Events in quadrant B1,649,9601,760,008
Events in quadrant C1,766,6701,701,445
Events in quadrant D1,500,6241,524,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0718010
B0723680
C0623260
D0824670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05840
B05840
C05840
D05840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2855212814.486551%
B2855216375.733399%
C285521480.518352%
D2855210373.631970%

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 41673 28549 0 0 0.00% 0.00%
B 41673 28541 0 0 0.00% 0.00%
C 41673 28552 0 0 0.00% 0.00%
D 41673 28550 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 1407 8.71 457 432 112.0
A 9 19 1365 8.33 457 432 112.0
A 7 110 1333 8.05 457 432 112.0
B 2 9 1446 11.75 438 419 87.4
B 3 80 1271 9.75 438 419 87.4
B 2 8 1175 8.65 438 419 87.4
C 1 81 1485 8.92 466 443 116.8
C 1 80 1455 8.67 466 443 116.8
C 3 203 1426 8.42 466 443 116.8
D 7 3 1128 6.41 430 396 114.2
D 10 113 1091 6.08 430 396 114.2
D 6 67 1089 6.07 430 396 114.2

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