ASTROSAT CZTI

Data Quality Report

Orbit 20180509_A04_218T04_9000002086_level2

Creation date: 2018-05-22T18:29:18.856675
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/AS1A04_218T04_9000002086cztM0_level2_bc.evt modeM0/AS1A04_218T04_9000002086cztM0_level2_quad_clean.evt
Size (bytes)2,687,169,600831,545,280
Size2.5 GB 793.0 MB
Events in quadrant A13,645,7605,259,266
Events in quadrant B14,586,1585,246,592
Events in quadrant C15,789,1265,384,574
Events in quadrant D33,017,7484,921,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01335600
B01371690
C01362010
D02006240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012960
B012960
C012960
D012960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A637847751.215038%
B637869401.473678%
C637796120.959563%
D6378156338.831784%

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 76151 63808 8 8 0.01% 0.01%
B 76151 63809 3 3 0.00% 0.00%
C 76151 63807 1 1 0.00% 0.00%
D 76151 63800 1655 1655 2.17% 2.59%

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 284728 381.5 3396 3336 737.6
A 8 15 106575 139.97 3396 3336 737.6
A 11 29 55673 70.96 3396 3336 737.6
B 10 244 474651 743.59 3394 3303 633.9
B 0 189 276364 430.77 3394 3303 633.9
B 3 209 209980 326.05 3394 3303 633.9
C 3 233 2583386 3417.88 3352 3295 754.9
C 14 234 55024 68.53 3352 3295 754.9
C 10 22 32568 38.78 3352 3295 754.9
D 7 80 11680507 15576.65 3230 3130 749.7
D 8 195 3386195 4512.73 3230 3130 749.7
D 1 52 2541878 3386.48 3230 3130 749.7

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