ASTROSAT CZTI

Data Quality Report

Orbit 20190815_T03_133T01_9000003092_level2

Creation date: 2019-08-19T10:41:09.292308
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/AS1T03_133T01_9000003092cztM0_level2_bc.evt modeM0/AS1T03_133T01_9000003092cztM0_level2_quad_clean.evt
Size (bytes)1,404,216,000476,657,280
Size1.3 GB 454.6 MB
Events in quadrant A7,839,3032,999,072
Events in quadrant B9,122,5183,008,035
Events in quadrant C7,695,1872,945,900
Events in quadrant D15,175,8592,774,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0814620
B0864170
C0810130
D01044750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08000
B08000
C08000
D08000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A394775301.342554%
B394778502.153152%
C394775841.479342%
D3947720455.180232%

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 44197 39480 2 2 0.00% 0.01%
B 44197 39478 9 9 0.02% 0.02%
C 44197 39479 0 0 0.00% 0.00%
D 44197 39478 559 559 1.26% 1.42%

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 82817 182.61 2019 1977 442.7
A 3 15 13373 25.74 2019 1977 442.7
A 0 226 13084 25.09 2019 1977 442.7
B 7 220 496231 1285.16 2031 1976 384.6
B 0 182 368238 952.35 2031 1976 384.6
B 3 64 123421 315.78 2031 1976 384.6
C 7 247 68863 141.92 1974 1960 471.4
C 10 91 15366 28.44 1974 1960 471.4
C 8 128 13671 24.84 1974 1960 471.4
D 1 52 6441600 13936.6 1967 1894 462.1
D 7 223 427099 920.21 1967 1894 462.1
D 9 1 261469 561.76 1967 1894 462.1

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