ASTROSAT CZTI

Data Quality Report

Orbit 19161

Creation date: 2024-06-27T17:59:39.127816
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_046T01_9000002838_19161cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19161cztM0_level2_quad_clean.evt
Size (bytes)489,856,32075,185,280
Size467.2 MB 71.7 MB
Events in quadrant A3,396,730459,394
Events in quadrant B3,593,622469,857
Events in quadrant C4,125,403447,681
Events in quadrant D3,276,639444,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142732
B0149462
C0164722
D0141162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65261181.808152%
B65271442.206220%
C65261802.758198%
D6526751.149249%

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 8656 6528 31 31 0.36% 0.47%
B 8657 6529 19 19 0.22% 0.29%
C 8656 6528 26 26 0.30% 0.40%
D 8656 6528 40 40 0.46% 0.61%

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 106626 624.23 837 819 169.5
A 11 47 67408 392.85 837 819 169.5
A 13 254 8405 44.75 837 819 169.5
B 3 112 176761 1092.65 840 820 161.0
B 7 220 103335 636.65 840 820 161.0
B 12 111 18473 109.63 840 820 161.0
C 3 233 845834 4517.59 806 814 187.1
C 14 238 125242 665.21 806 814 187.1
C 0 207 9554 46.73 806 814 187.1
D 11 176 151941 753.08 819 796 200.7
D 2 234 29212 141.58 819 796 200.7
D 7 96 16308 77.29 819 796 200.7

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