ASTROSAT CZTI

Data Quality Report

Orbit 20191216_A07_054T01_9000003370_level2

Creation date: 2025-12-06T18:12:00.819075
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/AS1A07_054T01_9000003370cztM0_level2.fits modeM0/AS1A07_054T01_9000003370cztM0_level2_quad_clean.evt
Size (bytes)783,576,000965,073,600
Size747.3 MB 920.4 MB
Events in quadrant A4,918,0526,357,157
Events in quadrant B4,638,3026,238,115
Events in quadrant C4,688,1865,884,080
Events in quadrant D4,056,6045,321,155

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01625940
B01653420
C01626410
D02183660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016140
B016140
C016140
D016140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A791755180.654247%
B791757630.963688%
C7917510171.284496%
D7917541675.263025%

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 91760 79174 0 0 0.00% 0.00%
B 91760 79175 0 0 0.00% 0.00%
C 91760 79174 0 0 0.00% 0.00%
D 91760 79140 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 4742 11.26 1280 1210 313.8
A 7 110 3821 8.32 1280 1210 313.8
A 9 19 3721 8.0 1280 1210 313.8
B 2 9 3682 10.63 1227 1178 235.5
B 2 8 3211 8.63 1227 1178 235.5
B 5 128 3059 7.99 1227 1178 235.5
C 1 81 3528 7.53 1238 1164 314.0
C 1 80 3504 7.45 1238 1164 314.0
C 12 241 3285 6.75 1238 1164 314.0
D 3 14 3043 6.4 1160 1064 309.3
D 10 189 3031 6.36 1160 1064 309.3
D 6 67 2834 5.72 1160 1064 309.3

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