ASTROSAT CZTI

Data Quality Report

Orbit 20191010_A07_004T01_9000003230_level2

Creation date: 2025-12-04T15:45:50.533086
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_004T01_9000003230cztM0_level2.fits modeM0/AS1A07_004T01_9000003230cztM0_level2_quad_clean.evt
Size (bytes)2,390,849,2801,942,119,360
Size2.2 GB 1.8 GB
Events in quadrant A14,733,52210,923,958
Events in quadrant B14,127,13410,993,456
Events in quadrant C14,396,26210,608,106
Events in quadrant D12,358,7609,498,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050020
B050020
C050020
D050020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05177860
B05383800
C05075410
D05991190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24511635811.460941%
B24511647411.934186%
C24511638571.573541%
D24511665852.686483%

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 286357 245096 0 0 0.00% 0.00%
B 286357 245071 0 0 0.00% 0.00%
C 286357 245095 0 0 0.00% 0.00%
D 286357 245016 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 14215 11.45 3831 3598 927.6
A 7 110 12156 9.23 3831 3598 927.6
A 0 30 11181 8.17 3831 3598 927.6
B 2 9 11533 10.95 3741 3573 726.8
B 2 8 9585 8.27 3741 3573 726.8
B 14 254 9347 7.94 3741 3573 726.8
C 3 234 10157 6.83 3801 3544 968.2
C 12 241 9971 6.64 3801 3544 968.2
C 3 126 9661 6.32 3801 3544 968.2
D 3 14 9005 6.15 3535 3210 942.3
D 6 231 8680 5.8 3535 3210 942.3
D 10 189 8640 5.76 3535 3210 942.3

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