ASTROSAT CZTI

Data Quality Report

Orbit 15765

Creation date: 2024-06-27T17:13:35.969722
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_028T01_9000002334_15765cztM0_level2.evt modeM0/AS1G08_028T01_9000002334_15765cztM0_level2_quad_clean.evt
Size (bytes)457,436,16069,883,200
Size436.2 MB 66.6 MB
Events in quadrant A3,243,789415,301
Events in quadrant B3,415,468426,222
Events in quadrant C3,358,885402,877
Events in quadrant D3,371,755396,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140362
B0143461
C0141681
D0146531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6829510.746815%
B6829660.966467%
C6829711.039684%
D6829410.600381%

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 7685 6831 0 0 0.00% 0.00%
B 7685 6831 0 0 0.00% 0.00%
C 7685 6831 1 1 0.01% 0.01%
D 7685 6831 22 22 0.29% 0.32%

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 9 143 13073 71.5 839 821 171.3
A 0 226 7408 38.44 839 821 171.3
A 12 194 5946 29.91 839 821 171.3
B 3 64 60591 368.88 843 823 162.0
B 3 209 34311 206.68 843 823 162.0
B 12 111 19199 113.41 843 823 162.0
C 14 238 121826 641.07 803 810 188.8
C 3 233 46141 240.14 803 810 188.8
C 7 247 26493 136.05 803 810 188.8
D 1 52 258427 1200.38 803 784 214.6
D 13 172 25018 112.91 803 784 214.6
D 10 70 24807 111.93 803 784 214.6

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