ASTROSAT CZTI

Data Quality Report

Orbit 20160322_T01_051T01_9000000390_level2

Creation date: 2016-09-06T17:51:51.122380
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_051T01_9000000390cztM0_level2_bc.evt modeM0/AS1T01_051T01_9000000390cztM0_level2_quad_clean.evt
Size (bytes)1,296,227,520580,273,920
Size1.2 GB 553.4 MB
Events in quadrant A6,685,4723,734,148
Events in quadrant B7,976,1833,826,598
Events in quadrant C8,020,3403,839,610
Events in quadrant D14,023,8193,610,563

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764320
B0799020
C0793880
D0994950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07560
B07560
C07560
D07560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A373566291.683799%
B373566741.804262%
C373564551.218010%
D3735617974.810472%

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 40390 37357 0 0 0.00% 0.00%
B 40390 37358 25 25 0.06% 0.07%
C 40390 37358 25 25 0.06% 0.07%
D 40390 37356 66 66 0.16% 0.18%

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 3 1 36086 90.01 1713 1670 382.3
A 8 15 17986 42.67 1713 1670 382.3
A 14 238 16969 40.01 1713 1670 382.3
B 10 244 596553 1850.12 1755 1700 321.5
B 5 6 159536 490.9 1755 1700 321.5
B 0 171 124986 383.44 1755 1700 321.5
C 2 53 573758 1503.37 1724 1691 380.5
C 9 85 340233 889.67 1724 1691 380.5
C 10 34 137595 357.15 1724 1691 380.5
D 10 170 2691252 6982.31 1670 1616 385.2
D 2 216 2539555 6588.5 1670 1616 385.2
D 2 184 923475 2393.15 1670 1616 385.2

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