ASTROSAT CZTI

Data Quality Report

Orbit 11700

Creation date: 2024-06-27T16:17:06.351966
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_227T01_9000001724_11700cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11700cztM0_level2_quad_clean.evt
Size (bytes)892,704,96097,459,200
Size851.3 MB 92.9 MB
Events in quadrant A10,748,277520,522
Events in quadrant B5,244,776632,700
Events in quadrant C3,698,081652,377
Events in quadrant D6,814,394598,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375033
B0206652
C0163942
D0255932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7865255232.447552%
B78654625.874126%
C7865740.940877%
D78656388.111888%

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 8046 7869 1566 1566 19.46% 19.90%
B 8046 7869 158 158 1.96% 2.01%
C 8046 7869 0 0 0.00% 0.00%
D 8046 7869 413 413 5.13% 5.25%

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 5625804 31456.62 864 845 178.8
A 6 16 1057604 5909.74 864 845 178.8
A 1 162 248263 1383.64 864 845 178.8
B 3 64 627008 3359.83 960 934 186.3
B 4 239 579501 3104.88 960 934 186.3
B 0 219 101568 540.05 960 934 186.3
C 13 61 6847 26.75 946 951 220.4
C 8 222 5831 22.14 946 951 220.4
C 14 234 2817 8.47 946 951 220.4
D 13 152 1834354 8123.47 926 898 225.7
D 1 52 744669 3295.42 926 898 225.7
D 8 195 379561 1677.74 926 898 225.7

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