ASTROSAT CZTI

Data Quality Report

Orbit 20181225_T03_066T01_9000002600_level2

Creation date: 2018-12-28T10:42:18.251334
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_066T01_9000002600cztM0_level2_bc.evt modeM0/AS1T03_066T01_9000002600cztM0_level2_quad_clean.evt
Size (bytes)4,488,451,2001,463,071,680
Size4.2 GB 1.4 GB
Events in quadrant A37,445,6619,234,929
Events in quadrant B28,996,6329,317,061
Events in quadrant C29,956,5619,055,543
Events in quadrant D31,726,7728,852,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023320
B023320
C023320
D023320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02957460
B02596180
C02563180
D02709540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01990
B01990
C01990
D01990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11462768986.017779%
B11462738173.329931%
C11462729392.563968%
D11462743433.788811%

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 134393 114623 123 123 0.09% 0.11%
B 134393 114616 199 199 0.15% 0.17%
C 134393 114625 573 573 0.43% 0.50%
D 134393 114471 330 330 0.25% 0.29%

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 14 237 14057726 10998.51 5892 5789 1277.6
A 15 174 758293 588.99 5892 5789 1277.6
A 0 226 38682 25.75 5892 5789 1277.6
B 10 245 4857633 4312.02 6003 5854 1125.2
B 6 36 372068 325.47 6003 5854 1125.2
B 15 222 126668 107.37 6003 5854 1125.2
C 0 79 4453345 3313.5 5769 5733 1342.3
C 3 233 2800238 2081.93 5769 5733 1342.3
C 5 218 256334 186.7 5769 5733 1342.3
D 7 238 3110914 2329.76 5803 5607 1332.9
D 5 222 2885078 2160.33 5803 5607 1332.9
D 13 189 1911126 1429.62 5803 5607 1332.9

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