ASTROSAT CZTI

Data Quality Report

Orbit 34572

Creation date: 2024-06-27T21:02:09.182210
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/AS1A05_167T01_9000004940_34572cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34572cztM0_level2_quad_clean.evt
Size (bytes)528,367,68079,862,400
Size503.9 MB 76.2 MB
Events in quadrant A2,958,915513,849
Events in quadrant B4,724,330489,163
Events in quadrant C2,991,362519,634
Events in quadrant D4,929,820486,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126023
B0179312
C0122452
D0187552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5857230.392693%
B585767511.524671%
C5857180.307325%
D58571873.192761%

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 7171 5858 9 9 0.13% 0.15%
B 7171 5858 448 448 6.25% 7.65%
C 7171 5858 6 6 0.08% 0.10%
D 7171 5858 147 147 2.05% 2.51%

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 15 174 154732 1100.64 690 676 140.0
A 9 143 49950 352.04 690 676 140.0
A 10 83 44760 314.96 690 676 140.0
B 5 172 1840524 14649.99 655 639 125.6
B 0 190 79752 629.93 655 639 125.6
B 0 229 53965 424.61 655 639 125.6
C 15 214 246289 1567.02 672 680 156.7
C 0 10 55259 348.22 672 680 156.7
C 14 67 30108 187.75 672 680 156.7
D 8 195 1410063 8601.75 664 646 163.9
D 1 47 233938 1423.79 664 646 163.9
D 2 250 215867 1313.51 664 646 163.9

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