ASTROSAT CZTI

Data Quality Report

Orbit 20170804_G07_022T02_9000001434_level2

Creation date: 2017-09-24T14:07:23.245136
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/AS1G07_022T02_9000001434cztM0_level2.evt modeM0/AS1G07_022T02_9000001434cztM0_level2_quad_clean.evt
Size (bytes)7,723,160,6401,539,296,640
Size7.2 GB 1.4 GB
Events in quadrant A63,356,10111,427,934
Events in quadrant B68,631,18911,573,888
Events in quadrant C59,430,53411,714,319
Events in quadrant D34,781,0924,094,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02290
C02330
D02280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027430
B027520
C027210
D027340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02812260
B02952940
C02733370
D01364250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13366613641.020454%
B13378227902.085482%
C1338158270.618017%
D4903522374.562048%

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 167437 137175 179 179 0.11% 0.13%
B 167437 137251 1009 1009 0.60% 0.74%
C 167437 137337 10 10 0.01% 0.01%
D 64907 51634 1920 1920 2.96% 3.72%

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 15 2463525 789.81 15442 15107 3100.0
A 15 174 618948 194.79 15442 15107 3100.0
A 15 239 534292 167.48 15442 15107 3100.0
B 4 81 5378693 1833.31 15564 15198 2925.6
B 0 214 742123 248.47 15564 15198 2925.6
B 4 239 565323 188.04 15564 15198 2925.6
C 14 67 202339 53.7 15152 15220 3484.5
C 13 61 112805 28.01 15152 15220 3484.5
C 14 234 96672 23.38 15152 15220 3484.5
D 2 16 4486467 3339.57 5459 5321 1341.8
D 8 195 3098280 2305.02 5459 5321 1341.8
D 10 118 1542016 1145.22 5459 5321 1341.8

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