ASTROSAT CZTI

Data Quality Report

Orbit 09272

Creation date: 2024-06-27T15:43:44.429688
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/AS1G07_027T01_9000001304_09272cztM0_level2.evt modeM0/AS1G07_027T01_9000001304_09272cztM0_level2_quad_clean.evt
Size (bytes)671,371,200116,455,680
Size640.3 MB 111.1 MB
Events in quadrant A7,040,425731,487
Events in quadrant B4,233,199755,860
Events in quadrant C3,980,787740,324
Events in quadrant D4,507,597714,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027070467
B017968230
C017511247
D019270376

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01744
B01740
C01744
D01742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84025025.974768%
B84391171.386420%
C8430871.032028%
D84312002.372198%

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 10131 8524 126 126 1.24% 1.48%
B 10131 8536 6 6 0.06% 0.07%
C 10131 8538 2 2 0.02% 0.02%
D 10131 8523 82 82 0.81% 0.96%

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 5 2598730 12285.85 1029 1008 211.4
A 4 2 164931 775.27 1029 1008 211.4
A 5 16 153232 719.94 1029 1008 211.4
B 0 214 64392 311.03 1050 1028 203.7
B 0 230 25416 119.71 1050 1028 203.7
B 12 111 21791 101.92 1050 1028 203.7
C 14 234 28115 115.18 1012 1021 235.2
C 13 61 7587 27.91 1012 1021 235.2
C 9 68 5238 17.93 1012 1021 235.2
D 1 52 314673 1146.12 1000 980 273.7
D 12 233 169135 614.38 1000 980 273.7
D 2 136 122497 443.98 1000 980 273.7

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