ASTROSAT CZTI

Data Quality Report

Orbit 27145

Creation date: 2024-06-27T19:37:18.944631
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_247T01_9000003914_27145cztM0_level2.evt modeM0/AS1T03_247T01_9000003914_27145cztM0_level2_quad_clean.evt
Size (bytes)304,001,28079,879,680
Size289.9 MB 76.2 MB
Events in quadrant A2,103,393536,190
Events in quadrant B2,219,970544,847
Events in quadrant C2,108,209524,812
Events in quadrant D2,485,864514,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089310
B092830
C089140
D0103130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4243531.249116%
B4242811.909477%
C4242942.215936%
D4242541.272984%

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 4373 4244 4 4 0.09% 0.09%
B 4372 4243 4 4 0.09% 0.09%
C 4372 4243 0 0 0.00% 0.00%
D 4372 4243 28 28 0.64% 0.66%

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 14 235 41982 386.36 524 512 107.3
A 13 34 29631 271.29 524 512 107.3
A 13 254 7285 63.1 524 512 107.3
B 3 64 54248 528.74 528 514 101.6
B 3 112 53225 518.67 528 514 101.6
B 0 190 24781 238.79 528 514 101.6
C 14 238 82682 684.12 513 514 120.1
C 2 16 12141 96.8 513 514 120.1
C 8 128 4100 29.86 513 514 120.1
D 7 38 145965 1094.93 510 500 132.9
D 1 52 144968 1087.43 510 500 132.9
D 2 250 144367 1082.91 510 500 132.9

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