ASTROSAT CZTI

Data Quality Report

Orbit 46934

Creation date: 2024-06-27T23:29:37.947167
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/AS1A13_077T01_9000006286_46934cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46934cztM0_level2_quad_clean.evt
Size (bytes)596,119,680109,229,760
Size568.5 MB 104.2 MB
Events in quadrant A7,011,034736,687
Events in quadrant B4,295,690770,027
Events in quadrant C3,241,656737,773
Events in quadrant D6,971,208570,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258692
B0174042
C0147472
D0255503

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70553014.266478%
B70561722.437642%
C7056931.318027%
D7055124217.604536%

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 7945 7055 0 0 0.00% 0.00%
B 7946 7056 37 37 0.47% 0.52%
C 7946 7056 21 21 0.26% 0.30%
D 7945 7055 1139 1139 14.34% 16.14%

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 10 83 3851653 23047.25 801 784 167.1
A 9 191 32793 191.57 801 784 167.1
A 7 3 12814 72.0 801 784 167.1
B 3 112 825932 5166.15 802 776 159.7
B 5 32 56735 350.35 802 776 159.7
B 15 36 52395 323.17 802 776 159.7
C 14 254 153218 815.54 791 793 186.9
C 13 61 5275 23.98 791 793 186.9
C 0 207 4937 22.17 791 793 186.9
D 12 0 2877467 15668.21 723 699 183.6
D 1 52 675103 3673.11 723 699 183.6
D 13 249 385945 2098.23 723 699 183.6

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