ASTROSAT CZTI

Data Quality Report

Orbit 00234

Creation date: 2024-06-27T13:58:14.726369
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/AS1P01_123T01_9000000024_00234cztM0_level2.evt modeM0/AS1P01_123T01_9000000024_00234cztM0_level2_quad_clean.evt
Size (bytes)878,397,12082,094,400
Size837.7 MB 78.3 MB
Events in quadrant A6,242,667522,581
Events in quadrant B6,651,896525,063
Events in quadrant C5,868,860543,671
Events in quadrant D7,466,998503,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225353
B0237042
C0214542
D0261892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558550.089526%
B5585130.232766%
C558530.053715%
D55852304.118174%

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 7320 5586 80 80 1.09% 1.43%
B 7320 5586 114 114 1.56% 2.04%
C 7320 5586 35 35 0.48% 0.63%
D 7320 5586 630 630 8.61% 11.28%

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 15 250 11615 28.15 1605 1583 356.3
A 12 189 7027 15.28 1605 1583 356.3
A 13 239 6222 13.02 1605 1583 356.3
B 5 46 220279 580.46 1628 1638 376.7
B 7 220 58610 151.25 1628 1638 376.7
B 0 85 39255 99.87 1628 1638 376.7
C 5 251 7374 14.13 1488 1541 412.7
C 5 175 6474 11.95 1488 1541 412.7
C 10 69 6082 11.0 1488 1541 412.7
D 1 4 1485357 3521.55 1451 1476 421.4
D 2 85 138629 325.49 1451 1476 421.4
D 10 154 61511 142.48 1451 1476 421.4

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