ASTROSAT CZTI

Data Quality Report

Orbit 36345

Creation date: 2022-06-18T19:08:54.297860
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/AS1A10_103T02_9000005192_36345cztM0_level2.evt modeM0/AS1A10_103T02_9000005192_36345cztM0_level2_quad_clean.evt
Size (bytes)456,779,52089,835,840
Size435.6 MB 85.7 MB
Events in quadrant A2,887,999593,622
Events in quadrant B4,130,307583,678
Events in quadrant C2,967,128587,912
Events in quadrant D3,462,809558,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122673
B0161222
C0123602
D0141462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5677360.634138%
B56773305.812929%
C5677591.039281%
D56771773.117844%

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 7470 5678 12 12 0.16% 0.21%
B 7470 5678 151 151 2.02% 2.66%
C 7470 5678 43 43 0.58% 0.76%
D 7470 5678 177 177 2.37% 3.12%

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 10 83 195986 1470.35 664 652 132.8
A 9 143 83123 620.79 664 652 132.8
A 12 189 16930 122.53 664 652 132.8
B 4 171 630384 5193.27 646 630 121.3
B 5 172 335249 2759.44 646 630 121.3
B 0 190 260286 2141.25 646 630 121.3
C 15 214 242038 1654.83 636 641 145.9
C 0 10 198774 1358.24 636 641 145.9
C 15 159 23204 154.67 636 641 145.9
D 12 6 391110 2517.2 634 617 155.1
D 13 171 118222 758.11 634 617 155.1
D 13 249 117986 756.59 634 617 155.1

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