ASTROSAT CZTI

Data Quality Report

Orbit 27470

Creation date: 2024-06-27T19:40:23.035833
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/AS1T03_249T01_9000003934_27470cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27470cztM0_level2_quad_clean.evt
Size (bytes)484,493,760101,508,480
Size462.0 MB 96.8 MB
Events in quadrant A3,178,437675,516
Events in quadrant B3,955,058662,762
Events in quadrant C3,410,308645,690
Events in quadrant D3,687,026636,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136810
B0160150
C0144060
D0154970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6507260.399570%
B65074016.162594%
C65071291.982480%
D65071392.136161%

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 7602 6508 0 0 0.00% 0.00%
B 7602 6508 220 220 2.89% 3.38%
C 7602 6508 32 32 0.42% 0.49%
D 7602 6507 48 48 0.63% 0.74%

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 0 13 16425 94.74 819 802 164.9
A 13 254 10819 60.75 819 802 164.9
A 3 137 7743 42.09 819 802 164.9
B 3 64 808561 5341.75 798 779 151.2
B 12 111 18761 118.91 798 779 151.2
B 11 111 16822 106.09 798 779 151.2
C 14 238 126642 683.65 783 791 184.1
C 2 16 117281 632.8 783 791 184.1
C 10 22 79479 427.45 783 791 184.1
D 1 52 398298 2134.45 781 761 186.2
D 12 227 233244 1248.24 781 761 186.2
D 2 250 57964 307.13 781 761 186.2

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