ASTROSAT CZTI

Data Quality Report

Orbit 35033

Creation date: 2022-06-11T13:53:00.311136
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T05_010T01_9000005016_35033cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35033cztM0_level2_quad_clean.evt
Size (bytes)397,912,32090,054,720
Size379.5 MB 85.9 MB
Events in quadrant A2,456,503604,737
Events in quadrant B2,686,898613,282
Events in quadrant C2,671,227596,085
Events in quadrant D3,888,001554,131

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105923
B0112272
C0107572
D0151332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5131120.233873%
B5131340.662639%
C5131250.487234%
D5131821.598129%

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 7042 5132 2 2 0.03% 0.04%
B 7042 5132 20 20 0.28% 0.39%
C 7042 5132 21 21 0.30% 0.41%
D 7042 5132 73 73 1.04% 1.42%

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 10 83 74870 607.53 605 595 122.3
A 15 174 23421 186.7 605 595 122.3
A 13 6 11790 91.57 605 595 122.3
B 5 172 130684 1119.83 605 589 116.2
B 4 232 61185 521.6 605 589 116.2
B 5 200 58151 495.48 605 589 116.2
C 15 214 213372 1552.07 593 599 137.1
C 0 10 100432 728.23 593 599 137.1
C 14 67 39517 283.88 593 599 137.1
D 8 195 1145131 7962.58 585 569 143.7
D 13 249 128606 890.74 585 569 143.7
D 2 31 113083 782.75 585 569 143.7

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