ASTROSAT CZTI

Data Quality Report

Orbit 12201

Creation date: 2024-06-27T16:23:44.856907
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_066T01_9000001802_12201cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12201cztM0_level2_quad_clean.evt
Size (bytes)561,841,920140,230,080
Size535.8 MB 133.7 MB
Events in quadrant A3,926,939976,478
Events in quadrant B5,318,506932,953
Events in quadrant C3,224,990966,730
Events in quadrant D4,100,563913,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161413
B0203112
C0139482
D0165312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65521211.846764%
B655273311.187424%
C6552640.976801%
D65522163.296703%

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 7888 6554 1 1 0.01% 0.02%
B 7888 6554 418 418 5.30% 6.38%
C 7888 6554 0 0 0.00% 0.00%
D 7888 6554 139 139 1.76% 2.12%

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 1 162 178514 1052.21 855 843 168.9
A 8 15 147758 870.06 855 843 168.9
A 1 178 101614 596.79 855 843 168.9
B 4 239 1412024 9581.03 809 793 147.3
B 3 64 260096 1760.44 809 793 147.3
B 4 173 133765 902.76 809 793 147.3
C 4 175 18001 93.06 817 823 184.6
C 0 207 7079 33.89 817 823 184.6
C 15 208 6766 32.2 817 823 184.6
D 13 104 371781 1964.93 814 794 188.8
D 2 33 279181 1474.48 814 794 188.8
D 12 221 90261 473.86 814 794 188.8

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