ASTROSAT CZTI

Data Quality Report

Orbit 20201205_A10_057T02_9000004054_level2

Creation date: 2021-01-07T02:11:43.249595
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/AS1A10_057T02_9000004054cztM0_level2_bc.evt modeM0/AS1A10_057T02_9000004054cztM0_level2_quad_clean.evt
Size (bytes)4,108,461,1201,007,899,200
Size3.8 GB 961.2 MB
Events in quadrant A18,617,7776,610,051
Events in quadrant B29,201,8226,255,261
Events in quadrant C21,736,8716,276,053
Events in quadrant D49,525,0465,994,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01330
C01340
D01340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015940
B016020
C015960
D016000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01687160
B02214650
C01835880
D02735270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A786419341.187676%
B78644825310.494125%
C7863720962.665412%
D7853065978.400611%

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 91858 78803 1 1 0.00% 0.00%
B 91858 78815 162 162 0.18% 0.21%
C 91858 78811 32 32 0.03% 0.04%
D 91859 78654 1451 1451 1.58% 1.84%

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 1294241 1357.9 4423 4363 949.9
A 13 254 127298 129.42 4423 4363 949.9
A 12 96 111429 112.71 4423 4363 949.9
B 10 245 12419203 15757.81 4192 4101 787.9
B 4 200 133772 164.58 4192 4101 787.9
B 4 52 130704 160.69 4192 4101 787.9
C 3 233 5675570 5845.87 4154 4143 970.2
C 15 208 62481 60.13 4154 4143 970.2
C 8 128 24813 21.31 4154 4143 970.2
D 8 195 20942029 22290.98 4164 4043 939.3
D 1 52 6701492 7130.23 4164 4043 939.3
D 2 250 3447776 3666.26 4164 4043 939.3

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