ASTROSAT CZTI

Data Quality Report

Orbit 29990

Creation date: 2024-06-27T20:09:30.585017
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/AS1A10_071T05_9000004308_29990cztM0_level2.evt modeM0/AS1A10_071T05_9000004308_29990cztM0_level2_quad_clean.evt
Size (bytes)556,223,04073,477,440
Size530.5 MB 70.1 MB
Events in quadrant A3,302,156461,274
Events in quadrant B5,026,999463,677
Events in quadrant C3,324,512438,856
Events in quadrant D4,767,137423,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135182
B0190993
C0135262
D0181022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269580.925187%
B6268981.563497%
C6268851.356094%
D62683305.264837%

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 7454 6270 3 3 0.04% 0.05%
B 7453 6269 3 3 0.04% 0.05%
C 7453 6269 2 2 0.03% 0.03%
D 7453 6269 281 281 3.77% 4.48%

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 8 192 23370 134.73 847 833 167.3
A 12 96 10612 58.46 847 833 167.3
A 13 254 10264 56.38 847 833 167.3
B 6 159 1712743 10870.96 835 815 157.5
B 10 247 29475 181.99 835 815 157.5
B 12 111 19335 117.6 835 815 157.5
C 14 238 134685 712.49 800 807 187.9
C 3 233 42199 220.29 800 807 187.9
C 2 114 14973 75.39 800 807 187.9
D 7 80 1471422 7811.87 790 772 188.3
D 8 195 153953 813.67 790 772 188.3
D 2 250 133698 706.08 790 772 188.3

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