ASTROSAT CZTI

Data Quality Report

Orbit 34435

Creation date: 2022-02-09T19:08:33.685478
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/AS1A10_058T05_9000004918_34435cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34435cztM0_level2_quad_clean.evt
Size (bytes)683,933,76049,746,240
Size652.3 MB 47.4 MB
Events in quadrant A2,886,076304,502
Events in quadrant B4,740,553299,378
Events in quadrant C3,289,890298,560
Events in quadrant D9,425,213218,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119613
B0176362
C0131132
D0318292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5496130.236536%
B549666912.172489%
C5496751.364629%
D5496273049.672489%

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 7439 5497 1 1 0.01% 0.02%
B 7439 5497 469 469 6.30% 8.53%
C 7439 5497 52 52 0.70% 0.95%
D 7439 5497 2181 2181 29.32% 39.68%

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 37698 256.58 730 718 144.1
A 13 6 14876 98.23 730 718 144.1
A 13 254 8783 55.96 730 718 144.1
B 5 172 1620975 12781.6 683 668 126.8
B 0 190 249859 1965.71 683 668 126.8
B 15 222 70420 550.23 683 668 126.8
C 15 214 229966 1428.97 699 707 160.4
C 0 10 142296 882.52 699 707 160.4
C 14 254 98225 607.83 699 707 160.4
D 10 118 5555656 40060.44 562 546 138.7
D 8 195 951902 6860.66 562 546 138.7
D 13 249 122633 880.43 562 546 138.7

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