ASTROSAT CZTI

Data Quality Report

Orbit 04013

Creation date: 2024-06-27T14:36:20.863909
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/AS1G05_173T01_9000000514_04013cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04013cztM0_level2_quad_clean.evt
Size (bytes)516,839,04077,952,960
Size492.9 MB 74.3 MB
Events in quadrant A3,755,679458,362
Events in quadrant B3,810,648460,361
Events in quadrant C3,615,500453,423
Events in quadrant D3,933,054438,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167603
B0167232
C0165832
D0175982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79054315.452245%
B79054405.566097%
C79053995.047438%
D79053975.022138%

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 8660 7907 6 6 0.07% 0.08%
B 8660 7908 0 0 0.00% 0.00%
C 8660 7907 0 0 0.00% 0.00%
D 8660 7908 47 47 0.54% 0.59%

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 53977 271.97 944 918 195.1
A 0 50 32991 164.4 944 918 195.1
A 0 226 14743 70.86 944 918 195.1
B 14 167 45450 239.46 953 927 185.9
B 15 204 33880 177.23 953 927 185.9
B 4 81 26647 138.33 953 927 185.9
C 13 61 7689 31.23 924 924 216.6
C 9 144 5953 23.22 924 924 216.6
C 3 202 2271 6.22 924 924 216.6
D 2 232 294935 1318.86 920 889 223.0
D 13 239 47260 207.98 920 889 223.0
D 13 223 35351 154.57 920 889 223.0

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