ASTROSAT CZTI

Data Quality Report

Orbit 20171125_A04_227T01_9000001724_level2

Creation date: 2017-11-28T11:28:36.203961
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_227T01_9000001724cztM0_level2_bc.evt modeM0/AS1A04_227T01_9000001724cztM0_level2_quad_clean.evt
Size (bytes)7,297,084,8001,591,263,360
Size6.8 GB 1.5 GB
Events in quadrant A58,778,1089,704,115
Events in quadrant B44,408,1909,989,321
Events in quadrant C27,361,42310,307,172
Events in quadrant D81,185,3378,854,453

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04257150
B03476560
C02802300
D05118150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02150
B02150
C02150
D02150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027720
B027720
C027720
D027720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136178119648.785560%
B13620066854.908223%
C1362008850.649780%
D1361762471618.150041%

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 157586 136183 565 565 0.36% 0.41%
B 157586 136164 200 200 0.13% 0.15%
C 157586 136204 4 4 0.00% 0.00%
D 157586 136182 1887 1887 1.20% 1.39%

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 5 25972820 17850.53 6758 6625 1454.6
A 1 162 1897400 1299.82 6758 6625 1454.6
A 6 16 1396790 955.67 6758 6625 1454.6
B 4 239 7328290 5630.16 6953 6768 1300.4
B 3 64 5010817 3848.05 6953 6768 1300.4
B 10 244 1222473 934.86 6953 6768 1300.4
C 14 234 77185 46.64 6946 6850 1508.1
C 13 61 41906 23.24 6946 6850 1508.1
C 8 222 41605 23.04 6946 6850 1508.1
D 13 152 38137300 25651.8 6426 6205 1486.5
D 8 195 4417944 2967.89 6426 6205 1486.5
D 7 80 3822059 2567.03 6426 6205 1486.5

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