ASTROSAT CZTI

Data Quality Report

Orbit 36395

Creation date: 2022-06-22T05:03:09.460230
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/AS1T04_084T01_9000005198_36395cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36395cztM0_level2_quad_clean.evt
Size (bytes)507,430,08091,612,800
Size483.9 MB 87.4 MB
Events in quadrant A3,150,817601,980
Events in quadrant B4,292,429598,609
Events in quadrant C3,035,296596,066
Events in quadrant D4,485,336561,810

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131483
B0167492
C0124612
D0173182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59491011.697764%
B59492414.051101%
C5949360.605144%
D59493956.639771%

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 9415 5951 35 35 0.37% 0.59%
B 9415 5951 146 146 1.55% 2.45%
C 9415 5951 24 24 0.25% 0.40%
D 9415 5951 402 402 4.27% 6.76%

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 15 223 298867 2152.31 684 670 138.5
A 10 83 190618 1371.0 684 670 138.5
A 13 254 9950 66.98 684 670 138.5
B 5 172 539201 4103.99 676 659 131.2
B 5 255 381390 2901.39 676 659 131.2
B 4 171 169553 1287.07 676 659 131.2
C 15 214 252770 1605.7 674 682 157.0
C 0 10 146766 930.5 674 682 157.0
C 0 207 5965 33.65 674 682 157.0
D 12 6 1164211 7169.91 661 646 162.3
D 12 227 403262 2480.93 661 646 162.3
D 2 249 123852 759.2 661 646 162.3

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