ASTROSAT CZTI

Data Quality Report

Orbit 20220509_A09_143T10_9000005130_level2

Creation date: 2022-05-14T12:01:52.300073
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/AS1A09_143T10_9000005130cztM0_level2_bc.evt modeM0/AS1A09_143T10_9000005130cztM0_level2_quad_clean.evt
Size (bytes)337,216,320128,928,960
Size321.6 MB 123.0 MB
Events in quadrant A1,879,251874,616
Events in quadrant B2,208,346866,578
Events in quadrant C2,175,925840,303
Events in quadrant D3,419,386789,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161570
B0178200
C0168940
D0225960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A767380.104262%
B76731521.980972%
C76731151.498762%
D76734535.903819%

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 11320 7675 0 0 0.00% 0.00%
B 11320 7673 1 1 0.01% 0.01%
C 11320 7673 7 7 0.06% 0.09%
D 11320 7673 5 5 0.04% 0.07%

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 192178 2013.51 423 416 95.2
A 13 6 16532 169.22 423 416 95.2
A 8 144 14489 147.77 423 416 95.2
B 5 172 215918 2568.99 417 409 83.9
B 0 190 129732 1541.6 417 409 83.9
B 5 255 92818 1101.56 417 409 83.9
C 15 214 305563 3269.38 403 400 93.3
C 0 10 191489 2047.24 403 400 93.3
C 15 208 93487 997.29 403 400 93.3
D 14 52 1081581 11172.05 405 393 96.8
D 13 249 115236 1186.69 405 393 96.8
D 8 195 100677 1036.25 405 393 96.8

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