ASTROSAT CZTI

Data Quality Report

Orbit 25857

Creation date: 2024-06-27T19:22:10.129578
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/AS1A07_068T01_9000003756_25857cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25857cztM0_level2_quad_clean.evt
Size (bytes)925,735,68083,597,760
Size882.9 MB 79.7 MB
Events in quadrant A4,242,031540,278
Events in quadrant B3,657,215552,700
Events in quadrant C14,910,262392,994
Events in quadrant D4,720,256522,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174890
B0156560
C0494730
D0192400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74982713.614297%
B74981131.507069%
C7498492265.644172%
D74973024.028278%

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 7813 7499 167 167 2.14% 2.23%
B 7813 7499 0 0 0.00% 0.00%
C 7813 7499 4083 4083 52.26% 54.45%
D 7812 7498 218 218 2.79% 2.91%

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 13 741287 4024.57 906 886 184.0
A 13 254 9842 48.68 906 886 184.0
A 3 137 8915 43.64 906 886 184.0
B 0 245 30871 169.86 908 883 176.5
B 0 219 26168 143.22 908 883 176.5
B 12 111 22303 121.33 908 883 176.5
C 7 87 12004526 72265.11 707 710 166.1
C 14 238 107106 640.52 707 710 166.1
C 7 226 27670 162.3 707 710 166.1
D 1 52 1293834 6194.16 865 841 208.7
D 12 233 68777 325.45 865 841 208.7
D 7 80 49959 235.3 865 841 208.7

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