ASTROSAT CZTI

Data Quality Report

Orbit 13382

Creation date: 2024-06-27T16:39:56.978981
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/AS1A04_103T01_9000001988_13382cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13382cztM0_level2_quad_clean.evt
Size (bytes)1,554,969,600236,157,120
Size1.4 GB 225.2 MB
Events in quadrant A8,742,4621,492,970
Events in quadrant B9,348,2441,521,912
Events in quadrant C9,337,2051,486,037
Events in quadrant D18,385,8691,345,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388705
B0400164
C0402934
D0676834

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189591860.981064%
B189592671.408302%
C189591820.959966%
D1895918079.531093%

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 20780 18964 24 24 0.12% 0.13%
B 20780 18964 58 58 0.28% 0.31%
C 20780 18964 28 28 0.13% 0.15%
D 20780 18964 1639 1639 7.89% 8.64%

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 15 69 78588 167.87 2232 2180 455.2
A 9 143 48181 101.07 2232 2180 455.2
A 1 162 25249 50.68 2232 2180 455.2
B 3 64 367339 855.18 2238 2175 427.0
B 0 214 55512 124.91 2238 2175 427.0
B 12 111 51050 114.46 2238 2175 427.0
C 14 220 659105 1298.94 2187 2196 505.7
C 3 233 139420 271.34 2187 2196 505.7
C 13 61 15560 26.42 2187 2196 505.7
D 1 52 9739424 19383.25 2092 2027 502.4
D 2 136 217528 428.98 2092 2027 502.4
D 13 249 200830 395.74 2092 2027 502.4

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