ASTROSAT CZTI

Data Quality Report

Orbit 21486

Creation date: 2024-06-27T18:28:29.715762
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/AS1T03_141T01_9000003174_21486cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21486cztM0_level2_quad_clean.evt
Size (bytes)523,932,480110,946,240
Size499.7 MB 105.8 MB
Events in quadrant A3,588,349715,645
Events in quadrant B3,796,066724,922
Events in quadrant C3,604,389706,157
Events in quadrant D4,359,755681,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158070
B0163280
C0158510
D0181850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7635540.707269%
B76361171.532216%
C76351011.322855%
D76351832.396857%

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 8315 7636 0 0 0.00% 0.00%
B 8316 7638 2 2 0.02% 0.03%
C 8315 7636 0 0 0.00% 0.00%
D 8315 7637 136 136 1.64% 1.78%

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 13 254 12320 60.37 930 908 189.0
A 0 226 8055 37.81 930 908 189.0
A 3 137 7737 36.13 930 908 189.0
B 0 190 41437 226.46 929 904 179.0
B 0 229 38929 212.45 929 904 179.0
B 0 230 28624 154.87 929 904 179.0
C 14 238 139730 664.26 889 895 209.0
C 13 61 6325 25.98 889 895 209.0
C 14 111 2070 5.62 889 895 209.0
D 7 38 405626 1873.36 893 869 216.1
D 1 52 181260 834.91 893 869 216.1
D 13 153 177646 818.19 893 869 216.1

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