ASTROSAT CZTI

Data Quality Report

Orbit 20170417_A03_025T07_9000001182_level2

Creation date: 2017-09-23T18:20:33.069404
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/AS1A03_025T07_9000001182cztM0_level2.evt modeM0/AS1A03_025T07_9000001182cztM0_level2_quad_clean.evt
Size (bytes)2,532,686,400469,592,640
Size2.4 GB 447.8 MB
Events in quadrant A17,839,5242,963,000
Events in quadrant B18,541,3853,008,064
Events in quadrant C17,195,7922,910,803
Events in quadrant D20,611,8032,785,178

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07620
B07640
C07580
D07580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0771470
B0783510
C0763290
D0865120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A372175081.364968%
B372145191.394636%
C372103080.827734%
D3721710162.729935%

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 45298 37300 23 23 0.05% 0.06%
B 45298 37299 21 21 0.05% 0.06%
C 45298 37301 2 2 0.00% 0.01%
D 45298 37302 555 555 1.23% 1.49%

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 4 2 137344 146.26 4544 4449 908.6
A 14 111 93160 97.63 4544 4449 908.6
A 13 251 53849 54.37 4544 4449 908.6
B 0 214 566680 664.06 4552 4443 846.7
B 4 81 100677 113.66 4552 4443 846.7
B 12 111 92604 104.13 4552 4443 846.7
C 1 16 60751 55.84 4388 4414 1008.8
C 13 61 32829 28.17 4388 4414 1008.8
C 8 222 20560 16.0 4388 4414 1008.8
D 7 71 1190803 1066.11 4324 4228 1113.0
D 1 52 863987 772.47 4324 4228 1113.0
D 4 95 416859 370.74 4324 4228 1113.0

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