ASTROSAT CZTI

Data Quality Report

Orbit 35100

Creation date: 2022-03-31T12:56:54.699507
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_015T01_9000005026_35100cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35100cztM0_level2_quad_clean.evt
Size (bytes)612,241,92056,695,680
Size583.9 MB 54.1 MB
Events in quadrant A2,821,751347,241
Events in quadrant B3,492,506345,186
Events in quadrant C3,296,330332,054
Events in quadrant D8,559,081306,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116743
B0137172
C0128672
D0293012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5510120.217786%
B55101683.049002%
C55101652.994555%
D5510106919.401089%

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 7333 5511 1 1 0.01% 0.02%
B 7333 5511 111 111 1.51% 2.01%
C 7333 5511 126 126 1.72% 2.29%
D 7333 5511 1039 1039 14.17% 18.85%

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 83344 593.6 700 687 139.2
A 15 174 13603 92.76 700 687 139.2
A 13 254 9316 61.97 700 687 139.2
B 5 172 322093 2492.87 680 666 128.9
B 5 255 288576 2232.92 680 666 128.9
B 0 190 75390 579.53 680 666 128.9
C 0 10 423589 2794.64 659 664 151.3
C 15 214 229236 1510.38 659 664 151.3
C 14 67 32842 212.63 659 664 151.3
D 8 195 4801721 30390.9 645 626 158.0
D 7 80 682677 4317.38 645 626 158.0
D 2 250 197695 1247.45 645 626 158.0

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