ASTROSAT CZTI

Data Quality Report

Orbit 06644

Creation date: 2024-06-27T15:09:48.109603
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/AS1A02_189T01_9000000902_06644cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06644cztM0_level2_quad_clean.evt
Size (bytes)529,352,640106,421,760
Size504.8 MB 101.5 MB
Events in quadrant A3,521,036697,114
Events in quadrant B3,252,603717,120
Events in quadrant C3,051,056709,687
Events in quadrant D5,756,735636,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148213
B0143142
C0139192
D0218162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6626350.528222%
B6626861.297917%
C6626681.026260%
D662675011.319046%

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 7906 6627 3 3 0.04% 0.05%
B 7906 6626 29 29 0.37% 0.44%
C 7906 6626 28 28 0.35% 0.42%
D 7906 6626 559 559 7.07% 8.44%

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 8 15 426207 2782.36 761 744 152.9
A 15 239 140501 913.95 761 744 152.9
A 15 174 11394 69.64 761 744 152.9
B 0 228 164629 1135.9 776 759 144.3
B 0 219 18493 122.93 776 759 144.3
B 4 170 16931 112.1 776 759 144.3
C 9 247 133755 777.63 746 751 171.0
C 13 61 6032 30.88 746 751 171.0
C 1 16 4224 20.31 746 751 171.0
D 2 33 1985735 11796.88 698 676 168.3
D 2 152 621892 3691.78 698 676 168.3
D 4 95 155286 918.82 698 676 168.3

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