ASTROSAT CZTI

Data Quality Report

Orbit 20180911_T02_100T01_9000002354_level2

Creation date: 2018-09-12T11:05:25.173473
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/AS1T02_100T01_9000002354cztM0_level2_bc.evt modeM0/AS1T02_100T01_9000002354cztM0_level2_quad_clean.evt
Size (bytes)647,426,880269,110,080
Size617.4 MB 256.6 MB
Events in quadrant A4,219,5221,741,492
Events in quadrant B5,196,7701,750,230
Events in quadrant C4,087,2741,675,537
Events in quadrant D4,773,7701,646,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409170
B0443690
C0408860
D0425270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194221900.978272%
B194222431.251158%
C194222541.307795%
D194222511.292349%

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 24223 19420 0 0 0.00% 0.00%
B 24223 19421 4 4 0.02% 0.02%
C 24223 19424 0 0 0.00% 0.00%
D 24223 19420 38 38 0.16% 0.20%

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 15 239 28446 116.12 1081 1064 235.8
A 9 143 22641 91.5 1081 1064 235.8
A 13 210 8861 33.06 1081 1064 235.8
B 0 189 237520 1152.29 1078 1053 205.2
B 4 216 158441 766.94 1078 1053 205.2
B 7 220 154528 747.87 1078 1053 205.2
C 3 233 118243 485.62 1020 1015 241.4
C 0 207 20166 79.33 1020 1015 241.4
C 10 69 14559 56.11 1020 1015 241.4
D 12 218 194822 789.83 1052 1018 245.4
D 2 152 122639 495.66 1052 1018 245.4
D 7 55 110591 446.56 1052 1018 245.4

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