ASTROSAT CZTI

Data Quality Report

Orbit 51187

Creation date: 2025-03-17T08:58:08.144481
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/AS1C07_001T01_9000006454_51187cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51187cztM0_level2_quad_clean.evt
Size (bytes)651,533,76085,080,960
Size621.4 MB 81.1 MB
Events in quadrant A4,354,827591,297
Events in quadrant B4,821,908620,630
Events in quadrant C9,288,626428,643
Events in quadrant D5,149,538483,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174721
B0188411
C0320491
D0201008

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64822153.316878%
B64835288.144378%
C6483206231.806263%
D648292714.301142%

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 7467 6483 115 115 1.54% 1.77%
B 7468 6484 284 284 3.80% 4.38%
C 7468 6484 1882 1882 25.20% 29.03%
D 7466 6482 694 694 9.30% 10.71%

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 12 3 470685 2823.87 663 646 166.5
A 14 254 408038 2447.5 663 646 166.5
A 13 248 219756 1316.35 663 646 166.5
B 5 185 467509 3343.69 654 631 139.6
B 8 128 374593 2678.24 654 631 139.6
B 7 252 350480 2505.55 654 631 139.6
C 4 12 4140313 26416.4 560 553 156.7
C 12 247 1932709 12329.36 560 553 156.7
C 13 3 228776 1456.32 560 553 156.7
D 3 12 1970519 12032.26 586 566 163.7
D 2 216 218333 1330.1 586 566 163.7
D 8 176 165331 1006.37 586 566 163.7

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