ASTROSAT CZTI

Data Quality Report

Orbit 48521

Creation date: 2024-09-21T12:18:10.181139
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_037T05_9000006434_48521cztM0_level2.fits modeM0/AS1A13_037T05_9000006434_48521cztM0_level2_quad_clean.evt
Size (bytes)501,825,600107,441,280
Size478.6 MB 102.5 MB
Events in quadrant A7,061,000692,313
Events in quadrant B3,136,641739,615
Events in quadrant C2,927,892719,403
Events in quadrant D4,918,394623,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261322
B0144052
C0140862
D0196592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68563244.725788%
B68561702.479580%
C6856520.758460%
D68563965.775963%

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 7751 6857 36 36 0.46% 0.53%
B 7751 6857 7 7 0.09% 0.10%
C 7751 6857 0 0 0.00% 0.00%
D 7751 6857 403 403 5.20% 5.88%

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 4129635 26750.56 742 726 154.3
A 12 189 34861 221.16 742 726 154.3
A 7 3 24564 154.44 742 726 154.3
B 5 255 70590 471.36 754 730 148.2
B 8 234 30198 198.83 754 730 148.2
B 12 16 29361 193.18 754 730 148.2
C 14 67 11410 60.1 744 747 177.4
C 12 250 8150 41.73 744 747 177.4
C 3 233 6006 29.64 744 747 177.4
D 2 165 1886415 10289.62 724 700 183.3
D 13 171 103626 561.63 724 700 183.3
D 2 249 74464 402.5 724 700 183.3

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