ASTROSAT CZTI

Data Quality Report

Orbit 36213

Creation date: 2024-06-27T21:23:47.753055
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/AS1A11_080T02_9000005176_36213cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36213cztM0_level2_quad_clean.evt
Size (bytes)700,407,36065,643,840
Size668.0 MB 62.6 MB
Events in quadrant A2,841,839447,413
Events in quadrant B3,853,268430,613
Events in quadrant C3,123,923437,012
Events in quadrant D11,023,058288,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118443
B0151042
C0127012
D0364712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5470150.274223%
B54703406.215722%
C54701172.138940%
D5470307556.215722%

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 7173 5471 2 2 0.03% 0.04%
B 7173 5471 245 245 3.42% 4.48%
C 7173 5471 77 77 1.07% 1.41%
D 7173 5471 2999 2999 41.81% 54.82%

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 198003 1577.02 623 611 125.2
A 15 223 181646 1446.34 623 611 125.2
A 15 174 12297 93.36 623 611 125.2
B 5 172 733189 6264.21 609 594 116.9
B 0 190 288073 2458.15 609 594 116.9
B 4 232 222988 1901.63 609 594 116.9
C 0 10 438535 3110.94 608 613 140.8
C 15 214 229455 1625.66 608 613 140.8
C 1 23 33818 235.88 608 613 140.8
D 12 235 4820971 40558.18 487 475 118.9
D 12 227 3519148 29605.04 487 475 118.9
D 12 6 511030 4295.65 487 475 118.9

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