ASTROSAT CZTI

Data Quality Report

Orbit 20171007_T01_193T01_9000001590_level2

Creation date: 2017-11-03T20:08:37.031977
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_193T01_9000001590cztM0_level2.evt modeM0/AS1T01_193T01_9000001590cztM0_level2_quad_clean.evt
Size (bytes)5,177,862,720994,518,720
Size4.8 GB 948.4 MB
Events in quadrant A43,497,5246,407,528
Events in quadrant B38,667,6776,587,225
Events in quadrant C28,050,3406,703,216
Events in quadrant D42,400,6776,151,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012720
B012700
C012720
D012700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01708870
B01560810
C01271770
D01686220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0970
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227537866.079486%
B6228730614.914348%
C623474320.692896%
D6222345007.232052%

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 71568 62540 2401 2401 3.35% 3.84%
B 71568 62563 1632 1632 2.28% 2.61%
C 71568 62612 1 1 0.00% 0.00%
D 71568 62486 3456 3456 4.83% 5.53%

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 14641193 10103.58 7200 7066 1448.4
A 8 15 658067 449.46 7200 7066 1448.4
A 13 210 200826 133.77 7200 7066 1448.4
B 4 239 8672074 6373.04 7286 7123 1359.6
B 0 214 384193 277.33 7286 7123 1359.6
B 4 173 313377 225.25 7286 7123 1359.6
C 13 61 53580 28.34 7184 7227 1635.7
C 8 222 23037 9.67 7184 7227 1635.7
C 14 234 18279 6.76 7184 7227 1635.7
D 10 253 7533018 4558.87 6898 6715 1650.9
D 1 52 4421910 2674.4 6898 6715 1650.9
D 5 222 900992 541.69 6898 6715 1650.9

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