ASTROSAT CZTI

Data Quality Report

Orbit 04360

Creation date: 2024-06-27T14:41:09.012713
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_9000000541_04360cztM0_level2.evt modeM0/AS1SLEW_01234_9000000541_04360cztM0_level2_quad_clean.evt
Size (bytes)81,855,3603,634,560
Size78.1 MB 3.5 MB
Events in quadrant A688,2875,773
Events in quadrant B550,1116,321
Events in quadrant C567,3066,067
Events in quadrant D594,2035,971

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027780
B023800
C024930
D025230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1118363.220036%
B111810.089445%
C1118151.341682%
D1118161.431127%

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 1118 1118 33 33 2.95% 2.95%
B 1118 1118 2 2 0.18% 0.18%
C 1118 1118 18 18 1.61% 1.61%
D 1118 1118 12 12 1.07% 1.07%

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 15 234 179510 6616.67 123 121 27.1
A 13 251 17630 645.81 123 121 27.1
A 8 15 11455 418.05 123 121 27.1
B 14 167 34284 1319.67 124 121 25.9
B 4 48 13745 526.28 124 121 25.9
B 15 204 10368 395.83 124 121 25.9
C 9 247 94888 3166.22 120 121 29.9
C 12 4 959 28.0 120 121 29.9
C 13 61 955 27.86 120 121 29.9
D 2 63 72509 2350.22 121 118 30.8
D 2 136 30867 998.29 121 118 30.8
D 13 53 22510 726.97 121 118 30.8

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