ASTROSAT CZTI

Data Quality Report

Orbit 20191116_C05_004T01_9000003308_level2

Creation date: 2019-11-19T13:33:00.710277
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/AS1C05_004T01_9000003308cztM0_level2_bc.evt modeM0/AS1C05_004T01_9000003308cztM0_level2_quad_clean.evt
Size (bytes)1,194,860,160536,008,320
Size1.1 GB 511.2 MB
Events in quadrant A7,488,2943,518,691
Events in quadrant B8,319,8193,582,772
Events in quadrant C7,000,7873,424,612
Events in quadrant D10,981,8653,300,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0726410
B0751430
C0721530
D0828580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07160
B07160
C07160
D07160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A350724661.328695%
B350726461.841925%
C350725971.702213%
D350726691.907505%

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 57028 35071 7 7 0.01% 0.02%
B 57028 35071 58 58 0.10% 0.17%
C 57028 35071 0 0 0.00% 0.00%
D 57028 35070 122 122 0.21% 0.35%

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 3 1 284098 694.58 1854 1819 406.4
A 4 2 67622 161.92 1854 1819 406.4
A 13 254 44641 105.37 1854 1819 406.4
B 3 64 562928 1584.98 1885 1844 354.0
B 0 190 136689 380.92 1885 1844 354.0
B 0 229 119783 333.16 1885 1844 354.0
C 0 10 27319 59.44 1805 1799 429.4
C 3 9 21427 45.71 1805 1799 429.4
C 13 61 10478 20.21 1805 1799 429.4
D 1 52 2244099 5283.2 1819 1757 424.4
D 12 227 1340100 3153.28 1819 1757 424.4
D 2 234 138991 323.34 1819 1757 424.4

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