ASTROSAT CZTI

Data Quality Report

Orbit 20181101_A05_202T01_9000002484_level2

Creation date: 2018-11-03T16:01:18.183150
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/AS1A05_202T01_9000002484cztM0_level2_bc.evt modeM0/AS1A05_202T01_9000002484cztM0_level2_quad_clean.evt
Size (bytes)5,788,523,5202,054,485,440
Size5.4 GB 1.9 GB
Events in quadrant A40,873,16913,606,833
Events in quadrant B29,192,98214,231,361
Events in quadrant C26,863,20013,593,940
Events in quadrant D70,295,69112,651,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01930
B01930
C01930
D01930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03174710
B02620040
C02551530
D04155740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024160
B024160
C024160
D024160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11887083026.984100%
B11887019811.666526%
C11887018761.578195%
D1188701192710.033650%

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 137195 118855 598 598 0.44% 0.50%
B 137195 118873 68 68 0.05% 0.06%
C 137195 118867 18 18 0.01% 0.02%
D 137195 118855 1788 1788 1.30% 1.50%

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 15 174 14349907 10712.58 6218 6119 1339.0
A 0 23 2117479 1576.86 6218 6119 1339.0
A 10 234 224489 163.09 6218 6119 1339.0
B 15 35 1146478 956.44 6442 6299 1192.1
B 10 16 553262 458.82 6442 6299 1192.1
B 0 189 451571 373.51 6442 6299 1192.1
C 3 233 1614526 1124.98 6125 6107 1429.7
C 0 207 1325535 922.85 6125 6107 1429.7
C 7 247 393479 270.94 6125 6107 1429.7
D 1 52 31366899 22227.9 6008 5813 1410.9
D 2 16 6346899 4494.39 6008 5813 1410.9
D 15 0 2223212 1571.63 6008 5813 1410.9

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