ASTROSAT CZTI

Data Quality Report

Orbit 16808

Creation date: 2024-06-27T17:27:53.381184
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/AS1A05_004T04_9000002494_16808cztM0_level2.evt modeM0/AS1A05_004T04_9000002494_16808cztM0_level2_quad_clean.evt
Size (bytes)210,300,48048,294,720
Size200.6 MB 46.1 MB
Events in quadrant A1,703,318317,108
Events in quadrant B1,324,432331,139
Events in quadrant C1,263,636320,286
Events in quadrant D1,899,681308,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068520
B057000
C053680
D073480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25952118.131021%
B259570.269750%
C259560.231214%
D25951154.431599%

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 2596 2596 152 152 5.86% 5.86%
B 2596 2596 0 0 0.00% 0.00%
C 2596 2596 0 0 0.00% 0.00%
D 2596 2596 95 95 3.66% 3.66%

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 15 174 560459 9328.43 290 284 60.1
A 15 190 14042 229.11 290 284 60.1
A 9 143 12947 210.87 290 284 60.1
B 15 35 134529 2302.47 298 292 58.3
B 12 111 6234 101.92 298 292 58.3
B 11 111 5579 90.68 298 292 58.3
C 3 233 82636 1187.35 290 291 69.4
C 14 238 45860 657.07 290 291 69.4
C 13 61 2017 24.89 290 291 69.4
D 1 52 739418 10290.89 291 282 71.8
D 12 218 27506 379.04 291 282 71.8
D 2 234 10459 141.69 291 282 71.8

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