ASTROSAT CZTI

Data Quality Report

Orbit 20171124_T01_207T01_9000001720_level2

Creation date: 2017-11-25T14:20:23.679443
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/AS1T01_207T01_9000001720cztM0_level2.evt modeM0/AS1T01_207T01_9000001720cztM0_level2_quad_clean.evt
Size (bytes)5,096,646,720784,048,320
Size4.7 GB 747.7 MB
Events in quadrant A49,192,0814,808,931
Events in quadrant B37,497,9755,005,225
Events in quadrant C27,933,7425,012,217
Events in quadrant D35,659,6954,774,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012300
B012300
C012300
D012300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01874480
B01502760
C01243250
D01459320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6044455919.249884%
B6044429954.955000%
C604446341.048905%
D6044417692.926676%

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 69331 60458 2989 2989 4.31% 4.94%
B 69331 60461 1073 1073 1.55% 1.77%
C 69331 60461 0 0 0.00% 0.00%
D 69331 60460 902 902 1.30% 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 8 5 16839360 11833.25 7060 6918 1422.5
A 1 162 1912993 1339.98 7060 6918 1422.5
A 1 178 1109398 775.05 7060 6918 1422.5
B 4 239 5605644 4150.69 7215 7026 1348.8
B 3 64 2116417 1563.85 7215 7026 1348.8
B 15 204 821711 603.99 7215 7026 1348.8
C 13 61 52893 28.01 7164 7194 1631.3
C 14 234 19716 7.68 7164 7194 1631.3
C 3 202 17957 6.6 7164 7194 1631.3
D 13 104 4178111 2483.0 7067 6873 1679.9
D 1 52 1526997 904.88 7067 6873 1679.9
D 8 195 1286289 761.59 7067 6873 1679.9

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