ASTROSAT CZTI

Data Quality Report

Orbit 11935

Creation date: 2024-06-27T16:20:16.777953
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/AS1A04_124T01_9000001766_11935cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11935cztM0_level2_quad_clean.evt
Size (bytes)612,429,120139,999,680
Size584.1 MB 133.5 MB
Events in quadrant A3,843,683955,040
Events in quadrant B4,885,826955,326
Events in quadrant C3,435,572932,237
Events in quadrant D5,834,856836,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167742
B0196571
C0162851
D0228361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80761031.275384%
B80763514.346211%
C8076520.643883%
D80767779.621100%

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 8527 8077 6 6 0.07% 0.07%
B 8527 8077 246 246 2.88% 3.05%
C 8527 8077 1 1 0.01% 0.01%
D 8527 8077 631 631 7.40% 7.81%

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 80665 424.47 919 900 187.9
A 8 15 48199 251.7 919 900 187.9
A 1 178 38661 200.94 919 900 187.9
B 4 239 982830 5677.89 906 884 172.9
B 15 204 167574 963.85 906 884 172.9
B 0 218 62823 358.15 906 884 172.9
C 13 61 6515 27.58 879 879 204.3
C 14 234 4912 19.74 879 879 204.3
C 0 207 3443 12.55 879 879 204.3
D 1 52 2159424 10853.38 826 800 198.9
D 8 195 209220 1047.92 826 800 198.9
D 13 104 77658 386.44 826 800 198.9

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