ASTROSAT CZTI

Data Quality Report

Orbit 17251

Creation date: 2024-06-27T17:34:05.843153
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/AS1A05_185T04_9000002552_17251cztM0_level2.evt modeM0/AS1A05_185T04_9000002552_17251cztM0_level2_quad_clean.evt
Size (bytes)412,583,040100,526,400
Size393.5 MB 95.9 MB
Events in quadrant A2,999,192677,573
Events in quadrant B3,046,291673,954
Events in quadrant C2,958,153632,929
Events in quadrant D3,078,480636,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129761
B0129041
C0126271
D0131871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6077520.855685%
B6077480.789863%
C6077641.053151%
D6077691.135429%

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 7257 6078 2 2 0.03% 0.03%
B 7257 6078 5 5 0.07% 0.08%
C 7257 6078 0 0 0.00% 0.00%
D 7257 6078 18 18 0.25% 0.30%

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 23 36048 229.92 766 752 153.5
A 15 174 17944 111.99 766 752 153.5
A 0 226 8939 53.33 766 752 153.5
B 0 197 39411 270.35 754 737 143.1
B 12 16 19044 127.98 754 737 143.1
B 0 189 16928 113.18 754 737 143.1
C 14 238 112520 673.87 720 727 165.9
C 3 233 33168 195.55 720 727 165.9
C 13 61 5046 26.03 720 727 165.9
D 13 189 129512 714.99 742 722 180.1
D 10 70 59897 328.52 742 722 180.1
D 7 38 47425 259.28 742 722 180.1

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