ASTROSAT CZTI

Data Quality Report

Orbit 20230713_A12_061T07_9000005752_level2

Creation date: 2023-07-15T12:07:38.066900
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/AS1A12_061T07_9000005752cztM0_level2.fits modeM0/AS1A12_061T07_9000005752cztM0_level2_quad_clean.evt
Size (bytes)216,282,240207,938,880
Size206.3 MB 198.3 MB
Events in quadrant A1,308,4881,237,937
Events in quadrant B1,263,2741,254,797
Events in quadrant C1,286,9461,173,595
Events in quadrant D1,100,3681,039,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497100
B0490950
C0469050
D0600280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23123420.181637%
B231221180.510336%
C23122180.077848%
D231228623.728051%

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 37787 23123 0 0 0.00% 0.00%
B 37787 23122 0 0 0.00% 0.00%
C 37787 23122 0 0 0.00% 0.00%
D 37787 23098 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 1095 8.94 341 322 86.4
A 9 19 1076 8.72 341 322 86.4
A 7 110 1033 8.22 341 322 86.4
B 2 9 1006 10.33 334 320 66.4
B 5 128 891 8.6 334 320 66.4
B 3 80 873 8.33 334 320 66.4
C 1 81 998 7.66 340 319 88.7
C 1 80 972 7.36 340 319 88.7
C 3 234 876 6.28 340 319 88.7
D 10 189 822 6.34 313 286 84.5
D 4 160 821 6.33 313 286 84.5
D 7 3 812 6.23 313 286 84.5

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