ASTROSAT CZTI

Data Quality Report

Orbit 39734

Creation date: 2024-06-27T22:08:21.159702
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/AS1A12_022T01_9000005494_39734cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39734cztM0_level2_quad_clean.evt
Size (bytes)397,751,04089,821,440
Size379.3 MB 85.7 MB
Events in quadrant A3,228,358628,165
Events in quadrant B2,579,279642,288
Events in quadrant C4,197,813578,669
Events in quadrant D4,310,768503,678

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127443
B0109882
C0160552
D0163162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5236881.680672%
B5236290.553858%
C52362715.175707%
D523660511.554622%

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 7088 5237 64 64 0.90% 1.22%
B 7088 5237 13 13 0.18% 0.25%
C 7088 5237 240 240 3.39% 4.58%
D 7088 5237 465 465 6.56% 8.88%

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 433349 3550.4 605 595 121.9
A 9 143 304298 2491.64 605 595 121.9
A 15 174 103787 846.61 605 595 121.9
B 5 172 112028 971.1 597 581 114.8
B 5 255 31296 267.64 597 581 114.8
B 0 230 26871 229.08 597 581 114.8
C 15 208 906648 6747.45 575 580 134.3
C 9 187 774219 5761.26 575 580 134.3
C 15 214 233467 1734.3 575 580 134.3
D 12 233 1446084 10485.65 560 545 137.9
D 12 227 507580 3677.93 560 545 137.9
D 2 250 139021 1004.48 560 545 137.9

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