ASTROSAT CZTI

Data Quality Report

Orbit 09191

Creation date: 2024-06-27T15:42:31.309021
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/AS1C02_041T02_9000001282_09191cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09191cztM0_level2_quad_clean.evt
Size (bytes)447,840,00078,768,000
Size427.1 MB 75.1 MB
Events in quadrant A3,517,567492,616
Events in quadrant B3,138,977507,626
Events in quadrant C2,915,492494,298
Events in quadrant D3,575,813464,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143795
B0131082
C0125322
D0147172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6118510.833606%
B6119470.768099%
C6119170.277823%
D61191031.683282%

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 7494 6118 13 13 0.17% 0.21%
B 7494 6119 2 2 0.03% 0.03%
C 7494 6120 0 0 0.00% 0.00%
D 7494 6120 91 91 1.21% 1.49%

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 8 5 348764 2267.77 763 751 153.5
A 1 162 99814 645.53 763 751 153.5
A 1 178 21772 136.98 763 751 153.5
B 8 234 38277 258.14 776 759 145.3
B 0 245 21795 144.74 776 759 145.3
B 12 111 15261 99.78 776 759 145.3
C 13 61 5828 29.6 746 751 171.5
C 8 222 2985 13.02 746 751 171.5
C 3 202 1820 6.23 746 751 171.5
D 1 52 327264 1819.09 735 714 179.5
D 7 71 137565 762.35 735 714 179.5
D 9 64 95029 525.39 735 714 179.5

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