ASTROSAT CZTI

Data Quality Report

Orbit 04727

Creation date: 2024-06-27T14:46:16.878959
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/AS1SLEW_01234_9000000593_04727cztM0_level2.evt modeM0/AS1SLEW_01234_9000000593_04727cztM0_level2_quad_clean.evt
Size (bytes)90,817,9203,625,920
Size86.6 MB 3.5 MB
Events in quadrant A473,8746,239
Events in quadrant B599,4976,212
Events in quadrant C628,7686,043
Events in quadrant D969,6925,731

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022900
B025580
C026080
D037010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111330.269542%
B1113131.168014%
C1113454.043127%
D1113595.300988%

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 1113 1113 3 3 0.27% 0.27%
B 1113 1113 8 8 0.72% 0.72%
C 1113 1113 41 41 3.68% 3.68%
D 1113 1113 80 80 7.19% 7.19%

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 0 118 22352 864.22 115 113 25.7
A 0 226 3285 123.27 115 113 25.7
A 13 251 1689 61.24 115 113 25.7
B 14 167 82046 3264.39 118 115 25.1
B 10 16 50171 1994.39 118 115 25.1
B 4 80 6415 251.01 118 115 25.1
C 14 48 191407 6813.35 111 112 28.1
C 8 208 2221 75.12 111 112 28.1
C 13 61 874 27.14 111 112 28.1
D 13 235 354650 12554.82 108 104 28.2
D 1 31 138409 4897.52 108 104 28.2
D 2 136 44897 1586.16 108 104 28.2

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