ASTROSAT CZTI

Data Quality Report

Orbit 12711

Creation date: 2024-06-27T16:31:24.841762
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_174T01_9000001876_12711cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12711cztM0_level2_quad_clean.evt
Size (bytes)589,783,68099,115,200
Size562.5 MB 94.5 MB
Events in quadrant A3,323,506658,213
Events in quadrant B4,747,934615,086
Events in quadrant C3,987,552645,169
Events in quadrant D5,340,282607,497

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143333
B0185972
C0163622
D0204242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6817430.630776%
B68175938.698841%
C68171522.229720%
D68175578.170750%

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 7543 6820 2 2 0.03% 0.03%
B 7543 6820 400 400 5.30% 5.87%
C 7543 6820 148 148 1.96% 2.17%
D 7543 6820 553 553 7.33% 8.11%

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 15 239 37107 213.39 834 818 170.1
A 11 29 29586 169.16 834 818 170.1
A 7 16 22999 130.43 834 818 170.1
B 4 239 1487240 9891.25 796 777 150.3
B 4 81 43256 282.66 796 777 150.3
B 0 214 30011 194.53 796 777 150.3
C 15 208 845650 4532.04 803 811 186.4
C 14 234 8635 41.97 803 811 186.4
C 13 61 5934 27.48 803 811 186.4
D 1 52 2187375 11710.48 777 760 186.7
D 10 157 152782 814.16 777 760 186.7
D 13 104 31294 163.53 777 760 186.7

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