ASTROSAT CZTI

Data Quality Report

Orbit 24144

Creation date: 2024-06-27T19:02:37.517129
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_069T01_9000003570_24144cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24144cztM0_level2_quad_clean.evt
Size (bytes)532,739,52070,107,840
Size508.1 MB 66.9 MB
Events in quadrant A3,570,695435,626
Events in quadrant B3,630,024443,513
Events in quadrant C3,702,356406,368
Events in quadrant D4,802,783396,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142972
B0146072
C0148172
D0183542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6319861.360975%
B63191251.978161%
C63181772.801519%
D63183225.096550%

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 7639 6319 0 0 0.00% 0.00%
B 7639 6319 1 1 0.01% 0.02%
C 7638 6318 14 14 0.18% 0.22%
D 7638 6318 229 229 3.00% 3.62%

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 9892 49.03 925 912 183.2
A 0 226 8286 40.26 925 912 183.2
A 3 137 7366 35.24 925 912 183.2
B 12 111 19857 110.11 923 905 172.1
B 11 111 17386 95.76 923 905 172.1
B 14 111 15706 86.0 923 905 172.1
C 14 238 141325 711.33 859 867 197.5
C 2 16 103411 519.32 859 867 197.5
C 7 247 58882 293.81 859 867 197.5
D 7 238 1337469 6396.55 864 842 209.0
D 8 195 122866 583.96 864 842 209.0
D 1 52 76794 363.48 864 842 209.0

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