ASTROSAT CZTI

Data Quality Report

Orbit 23149

Creation date: 2024-06-27T18:50:34.293579
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/AS1A08_009T01_9000003422_23149cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23149cztM0_level2_quad_clean.evt
Size (bytes)499,224,960116,328,960
Size476.1 MB 110.9 MB
Events in quadrant A3,589,587750,971
Events in quadrant B3,612,443772,535
Events in quadrant C3,680,174744,214
Events in quadrant D3,720,591726,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01594158
B01596064
C01605662
D01664566

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7594380.500395%
B7592680.895680%
C75931211.593573%
D7592620.816649%

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 8663 7601 3 3 0.03% 0.04%
B 8664 7599 1 1 0.01% 0.01%
C 8664 7599 3 3 0.03% 0.04%
D 8664 7596 30 30 0.35% 0.39%

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 6 16 125635 694.65 898 880 179.6
A 13 254 11521 59.25 898 880 179.6
A 3 137 8106 40.24 898 880 179.6
B 14 207 22994 127.17 903 881 173.9
B 12 111 21371 117.84 903 881 173.9
B 4 173 19914 109.46 903 881 173.9
C 14 238 135832 668.07 868 872 202.0
C 0 10 92907 455.59 868 872 202.0
C 3 233 22776 108.43 868 872 202.0
D 7 238 140612 656.53 872 844 212.9
D 13 153 79320 368.63 872 844 212.9
D 1 52 78391 364.26 872 844 212.9

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