ASTROSAT CZTI

Data Quality Report

Orbit 36306

Creation date: 2022-06-16T04:17:03.263572
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/AS1A11_089T02_9000005188_36306cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36306cztM0_level2_quad_clean.evt
Size (bytes)462,165,12056,520,000
Size440.8 MB 53.9 MB
Events in quadrant A2,465,129359,389
Events in quadrant B3,791,849347,496
Events in quadrant C2,616,355345,954
Events in quadrant D4,793,506316,946

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104343
B0144682
C0107222
D0175452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4860130.267490%
B48603226.625514%
C4860841.728395%
D48604709.670782%

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 6953 4861 6 6 0.09% 0.12%
B 6953 4861 276 276 3.97% 5.68%
C 6953 4861 84 84 1.21% 1.73%
D 6953 4861 525 525 7.55% 10.80%

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 173905 1508.61 567 557 114.9
A 15 223 23558 200.17 567 557 114.9
A 7 3 20343 172.19 567 557 114.9
B 5 172 564915 5341.34 552 539 105.7
B 5 236 407206 3848.76 552 539 105.7
B 4 171 333324 3149.53 552 539 105.7
C 0 10 287944 2272.77 543 549 126.5
C 15 214 205734 1622.64 543 549 126.5
C 15 159 5099 35.98 543 549 126.5
D 7 223 1258911 9801.17 522 509 128.4
D 12 6 690808 5376.45 522 509 128.4
D 13 249 366232 2848.46 522 509 128.4

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