ASTROSAT CZTI

Data Quality Report

Orbit 20180715_G08_046T09_9000002226_level2

Creation date: 2018-07-17T10:20:19.149146
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_046T09_9000002226cztM0_level2_bc.evt modeM0/AS1G08_046T09_9000002226cztM0_level2_quad_clean.evt
Size (bytes)2,534,892,480867,409,920
Size2.4 GB 827.2 MB
Events in quadrant A14,219,3695,558,041
Events in quadrant B20,508,7475,515,928
Events in quadrant C21,503,9145,388,808
Events in quadrant D15,980,7755,224,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01388090
B01632210
C01649280
D01461100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013640
B013640
C013640
D013640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668596901.032023%
B6685929744.448167%
C6685917572.627918%
D6685913812.065541%

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 78540 66860 6 6 0.01% 0.01%
B 78540 66856 228 228 0.29% 0.34%
C 78540 66857 40 40 0.05% 0.06%
D 78540 66861 416 416 0.53% 0.62%

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 12 189 699810 935.6 3429 3362 744.4
A 9 143 104635 136.05 3429 3362 744.4
A 15 239 103289 134.24 3429 3362 744.4
B 10 245 3581210 5672.3 3419 3334 630.8
B 3 64 2794574 4425.18 3419 3334 630.8
B 3 209 181883 283.07 3419 3334 630.8
C 3 233 6320485 8610.46 3336 3300 733.7
C 4 254 1844407 2509.47 3336 3300 733.7
C 0 207 111635 147.66 3336 3300 733.7
D 1 255 1119107 1422.06 3361 3238 784.7
D 2 33 565441 716.47 3361 3238 784.7
D 2 234 249548 313.9 3361 3238 784.7

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