ASTROSAT CZTI

Data Quality Report

Orbit 12341

Creation date: 2024-06-27T16:25:46.002653
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_130T01_9000001822_12341cztM0_level2.evt modeM0/AS1A04_130T01_9000001822_12341cztM0_level2_quad_clean.evt
Size (bytes)585,717,12087,592,320
Size558.6 MB 83.5 MB
Events in quadrant A4,904,186546,179
Events in quadrant B3,712,940551,185
Events in quadrant C3,919,246543,311
Events in quadrant D4,720,253516,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194933
B0156822
C0164092
D0191392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71111742.446913%
B71111421.996906%
C71111782.503164%
D71113615.076642%

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 8872 7114 21 21 0.24% 0.30%
B 8872 7114 49 49 0.55% 0.69%
C 8872 7114 91 91 1.03% 1.28%
D 8872 7114 327 327 3.69% 4.60%

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 15 859858 4992.0 837 818 172.1
A 13 251 364979 2116.19 837 818 172.1
A 1 162 185411 1072.7 837 818 172.1
B 4 239 186327 1137.54 841 818 163.1
B 0 230 90487 549.85 841 818 163.1
B 0 85 60960 368.79 841 818 163.1
C 4 254 679294 3553.3 814 818 190.9
C 15 208 47877 246.46 814 818 190.9
C 8 128 6618 30.38 814 818 190.9
D 1 52 1466407 7564.8 804 782 193.7
D 10 199 29986 150.74 804 782 193.7
D 7 80 28785 144.54 804 782 193.7

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