ASTROSAT CZTI

Data Quality Report

Orbit 46545

Creation date: 2024-06-27T23:24:32.209534
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/AS1A13_091T08_9000006228_46545cztM0_level2.fits modeM0/AS1A13_091T08_9000006228_46545cztM0_level2_quad_clean.evt
Size (bytes)497,998,080105,984,000
Size474.9 MB 101.1 MB
Events in quadrant A6,337,803702,164
Events in quadrant B3,463,737739,351
Events in quadrant C3,604,746692,170
Events in quadrant D4,526,682624,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229472
B0145632
C0152532
D0179156

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64652133.294664%
B6465921.423047%
C64652043.155452%
D64633024.672753%

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 7595 6465 105 105 1.38% 1.62%
B 7595 6465 42 42 0.55% 0.65%
C 7595 6466 173 173 2.28% 2.68%
D 7595 6465 248 248 3.27% 3.84%

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 10 83 3246086 21577.65 724 707 150.4
A 9 191 203329 1347.18 724 707 150.4
A 7 3 37923 247.44 724 707 150.4
B 15 201 394239 2740.1 731 709 143.6
B 3 112 47172 323.52 731 709 143.6
B 5 32 39128 267.51 731 709 143.6
C 1 241 419290 2491.16 713 719 168.0
C 14 254 197572 1171.59 713 719 168.0
C 9 54 149239 883.93 713 719 168.0
D 1 52 1088566 6116.87 700 679 177.9
D 2 120 266766 1496.13 700 679 177.9
D 13 249 226435 1269.36 700 679 177.9

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