ASTROSAT CZTI

Data Quality Report

Orbit 20171207_G08_048T01_9000001752_level2

Creation date: 2018-01-05T14:53:48.187495
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/AS1G08_048T01_9000001752cztM0_level2_bc.evt modeM0/AS1G08_048T01_9000001752cztM0_level2_quad_clean.evt
Size (bytes)868,152,960287,723,520
Size827.9 MB 274.4 MB
Events in quadrant A5,205,1561,811,071
Events in quadrant B7,411,7641,768,469
Events in quadrant C4,662,8661,779,997
Events in quadrant D7,356,0331,688,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519850
B0612390
C0492680
D0568330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242212350.970232%
B2422112815.288799%
C24221840.346806%
D242214031.663845%

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 29262 24223 0 0 0.00% 0.00%
B 29262 24222 49 49 0.17% 0.20%
C 29262 24222 0 0 0.00% 0.00%
D 29262 24222 105 105 0.36% 0.43%

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 1 162 194656 712.34 1217 1189 271.6
A 8 15 155950 569.82 1217 1189 271.6
A 13 251 85449 310.24 1217 1189 271.6
B 4 239 1857258 7977.25 1206 1174 232.7
B 3 64 310734 1330.45 1206 1174 232.7
B 15 204 147952 630.84 1206 1174 232.7
C 13 61 7121 22.8 1189 1173 260.8
C 12 4 5334 15.95 1189 1173 260.8
C 7 247 4120 11.3 1189 1173 260.8
D 1 52 1362350 4998.39 1178 1133 272.3
D 8 195 940766 3450.33 1178 1133 272.3
D 13 104 121301 441.26 1178 1133 272.3

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