ASTROSAT CZTI

Data Quality Report

Orbit 20180726_G08_037T01_9000002256_level2

Creation date: 2018-07-28T09:34:09.555814
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/AS1G08_037T01_9000002256cztM0_level2_bc.evt modeM0/AS1G08_037T01_9000002256cztM0_level2_quad_clean.evt
Size (bytes)1,064,946,240451,661,760
Size1015.6 MB 430.7 MB
Events in quadrant A6,710,9622,964,392
Events in quadrant B9,419,5022,955,943
Events in quadrant C7,296,3392,908,015
Events in quadrant D6,773,1502,788,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0638850
B0735980
C0639550
D0639040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A300334351.448407%
B3003312124.035561%
C300333381.125429%
D300334661.551627%

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 36169 30030 0 0 0.00% 0.00%
B 36169 30028 139 139 0.38% 0.46%
C 36169 30030 0 0 0.00% 0.00%
D 36169 30028 15 15 0.04% 0.05%

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 12 189 288592 807.61 1633 1602 355.4
A 9 143 91102 251.86 1633 1602 355.4
A 12 30 31126 83.08 1633 1602 355.4
B 10 16 2073707 6745.71 1619 1576 307.2
B 0 85 179594 579.53 1619 1576 307.2
B 0 219 164693 531.02 1619 1576 307.2
C 3 233 1059235 3081.44 1578 1560 343.2
C 7 247 53060 150.04 1578 1560 343.2
C 10 22 10126 24.96 1578 1560 343.2
D 2 33 127086 346.51 1592 1538 362.3
D 2 234 112564 306.43 1592 1538 362.3
D 7 38 106924 290.86 1592 1538 362.3

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