ASTROSAT CZTI

Data Quality Report

Orbit 20181029_A05_225T01_9000002470_level2

Creation date: 2018-10-30T10:34:04.082104
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_225T01_9000002470cztM0_level2_bc.evt modeM0/AS1A05_225T01_9000002470cztM0_level2_quad_clean.evt
Size (bytes)386,642,88085,248,000
Size368.7 MB 81.3 MB
Events in quadrant A3,619,706489,379
Events in quadrant B1,898,507539,889
Events in quadrant C1,633,219521,342
Events in quadrant D4,029,144497,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256380
B0172160
C0163780
D0249280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A766599012.915851%
B76652032.648402%
C76652082.713633%
D76653834.996738%

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 9911 7662 56 56 0.57% 0.73%
B 9911 7666 1 1 0.01% 0.01%
C 9911 7666 0 0 0.00% 0.00%
D 9911 7666 12 12 0.12% 0.16%

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 15 174 1894351 21351.49 401 392 88.7
A 9 143 126795 1425.0 401 392 88.7
A 15 190 32493 361.89 401 392 88.7
B 15 35 76981 929.96 427 416 82.3
B 0 229 44924 540.59 427 416 82.3
B 15 222 40920 491.96 427 416 82.3
C 3 233 40247 408.99 412 409 97.4
C 7 247 4900 46.11 412 409 97.4
C 13 61 2567 22.15 412 409 97.4
D 2 16 1035570 10705.92 414 399 96.7
D 1 52 1013734 10480.08 414 399 96.7
D 5 222 282243 2914.88 414 399 96.7

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