ASTROSAT CZTI

Data Quality Report

Orbit 20220219_C07_014T01_9000004950_level2

Creation date: 2026-01-01T07:10:10.190913
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/AS1C07_014T01_9000004950cztM0_level2.fits modeM0/AS1C07_014T01_9000004950cztM0_level2_quad_clean.evt
Size (bytes)893,592,000869,509,440
Size852.2 MB 829.2 MB
Events in quadrant A5,675,4845,513,450
Events in quadrant B5,205,6945,255,448
Events in quadrant C5,445,9165,219,517
Events in quadrant D4,429,3884,043,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018740
B018740
C018740
D018740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01946880
B02551050
C02013270
D03884210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A919275210.566754%
B9192764907.059950%
C919274860.528680%
D91927995310.827069%

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 125831 91924 0 0 0.00% 0.00%
B 125831 91865 0 0 0.00% 0.00%
C 125831 91922 0 0 0.00% 0.00%
D 125831 91774 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 7 110 4717 9.36 1480 1396 354.7
A 0 29 4710 9.34 1480 1396 354.7
A 9 19 4577 8.97 1480 1396 354.7
B 2 9 4442 11.64 1380 1325 267.7
B 3 80 3915 9.67 1380 1325 267.7
B 2 8 3629 8.61 1380 1325 267.7
C 1 81 4720 9.21 1440 1353 365.4
C 1 80 4588 8.85 1440 1353 365.4
C 3 202 4313 8.1 1440 1353 365.4
D 7 3 3376 6.53 1271 1159 339.4
D 10 113 3225 6.09 1271 1159 339.4
D 10 189 3211 6.05 1271 1159 339.4

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