ASTROSAT CZTI

Data Quality Report

Orbit 13669

Creation date: 2024-06-27T16:44:18.082769
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/AS1G08_070T01_9000002028_13669cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13669cztM0_level2_quad_clean.evt
Size (bytes)626,448,96086,434,560
Size597.4 MB 82.4 MB
Events in quadrant A4,027,443526,591
Events in quadrant B4,488,872561,893
Events in quadrant C4,257,179501,094
Events in quadrant D5,654,469469,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171144
B0182603
C0173393
D0220753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80313053.797784%
B80313694.594696%
C80312292.851451%
D80313884.831279%

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 8377 8035 0 0 0.00% 0.00%
B 8377 8035 12 12 0.14% 0.15%
C 8377 8035 0 0 0.00% 0.00%
D 8377 8035 94 94 1.12% 1.17%

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 1 162 20574 91.76 1036 1011 213.2
A 0 226 9199 38.4 1036 1011 213.2
A 12 194 8030 32.92 1036 1011 213.2
B 0 219 183215 909.72 1037 1016 200.3
B 4 142 82254 405.62 1037 1016 200.3
B 3 209 49257 240.87 1037 1016 200.3
C 3 233 360926 1536.92 995 1001 234.2
C 8 128 8765 33.15 995 1001 234.2
C 13 61 7207 26.5 995 1001 234.2
D 1 52 626039 2577.97 987 959 242.5
D 13 122 463096 1905.96 987 959 242.5
D 8 195 304594 1252.26 987 959 242.5

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