ASTROSAT CZTI

Data Quality Report

Orbit 31860

Creation date: 2024-06-27T20:33:36.164936
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_109T01_9000004646_31860cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31860cztM0_level2_quad_clean.evt
Size (bytes)536,880,960122,232,960
Size512.0 MB 116.6 MB
Events in quadrant A3,433,559853,293
Events in quadrant B4,862,156840,442
Events in quadrant C3,869,678801,404
Events in quadrant D3,688,122788,275

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141311
B0183601
C0155071
D0149411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59961302.168112%
B59961893.152101%
C59962794.653102%
D59961161.934623%

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 7271 5997 0 0 0.00% 0.00%
B 7271 5997 2 2 0.03% 0.03%
C 7271 5997 62 62 0.85% 1.03%
D 7271 5997 12 12 0.17% 0.20%

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 13 254 10735 56.06 889 878 175.8
A 3 137 8028 40.66 889 878 175.8
A 0 226 7512 37.73 889 878 175.8
B 6 159 1491650 9313.93 856 837 160.1
B 12 111 18504 110.38 856 837 160.1
B 11 111 17030 101.17 856 837 160.1
C 0 10 334302 1749.97 828 838 190.6
C 3 233 146393 763.85 828 838 190.6
C 14 238 136425 711.54 828 838 190.6
D 8 195 211765 1055.63 857 840 199.8
D 12 218 85165 422.03 857 840 199.8
D 13 174 52971 260.9 857 840 199.8

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