ASTROSAT CZTI

Data Quality Report

Orbit 45550

Creation date: 2024-06-27T23:13:30.949244
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_093T11_9000006108_45550cztM0_level2.fits modeM0/AS1A13_093T11_9000006108_45550cztM0_level2_quad_clean.evt
Size (bytes)360,869,76082,149,120
Size344.2 MB 78.3 MB
Events in quadrant A4,135,035551,367
Events in quadrant B3,020,052541,730
Events in quadrant C2,867,578538,506
Events in quadrant D2,936,690496,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161072
B0127021
C0123361
D0125231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51261011.970347%
B51263065.969567%
C51261492.906750%
D51261172.282481%

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 5551 5127 0 0 0.00% 0.00%
B 5551 5127 200 200 3.60% 3.90%
C 5551 5127 100 100 1.80% 1.95%
D 5551 5127 78 78 1.41% 1.52%

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 1896154 15806.85 571 558 119.9
A 2 79 8967 70.12 571 558 119.9
A 15 174 7188 55.29 571 558 119.9
B 5 172 469475 4286.94 550 532 109.4
B 15 201 347257 3169.66 550 532 109.4
B 12 111 14181 124.78 550 532 109.4
C 14 254 396969 3006.84 556 560 131.8
C 12 2 287551 2176.89 556 560 131.8
C 2 14 8677 61.57 556 560 131.8
D 1 52 294117 2093.89 557 539 140.2
D 11 224 209217 1488.36 557 539 140.2
D 2 249 88338 626.21 557 539 140.2

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