ASTROSAT CZTI

Data Quality Report

Orbit 20190314_A05_165T07_9000002796_level2

Creation date: 2020-06-09T23:14:53.997433
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_165T07_9000002796cztM0_level2_bc.evt modeM0/AS1A05_165T07_9000002796cztM0_level2_quad_clean.evt
Size (bytes)3,014,265,600956,321,280
Size2.8 GB 912.0 MB
Events in quadrant A17,100,0096,160,231
Events in quadrant B17,425,2756,267,225
Events in quadrant C27,018,8445,954,268
Events in quadrant D24,964,5985,769,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01606940
B01613260
C02084290
D01861290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07650
B07650
C07650
D07650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7511210011.332677%
B751129641.283417%
C7511218262.431036%
D7511234954.653051%

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 87682 75109 31 31 0.04% 0.04%
B 87682 75107 30 30 0.03% 0.04%
C 87682 75110 45 45 0.05% 0.06%
D 87682 75111 1861 1861 2.12% 2.48%

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 0 13 767392 870.11 4052 3982 877.4
A 9 143 459180 518.82 4052 3982 877.4
A 13 254 106183 116.49 4052 3982 877.4
B 10 245 842126 1108.71 4094 4000 755.9
B 3 64 225343 292.8 4094 4000 755.9
B 4 216 159805 206.11 4094 4000 755.9
C 3 233 11781264 12934.11 3896 3883 910.6
C 0 207 235446 254.31 3896 3883 910.6
C 13 61 22525 20.47 3896 3883 910.6
D 1 52 7607381 8420.34 3934 3796 903.0
D 7 238 1702238 1880.88 3934 3796 903.0
D 2 234 314582 344.17 3934 3796 903.0

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