ASTROSAT CZTI

Data Quality Report

Orbit 44395

Creation date: 2024-06-27T23:03:03.871058
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_008T08_9000005998_44395cztM0_level2.fits modeM0/AS1A13_008T08_9000005998_44395cztM0_level2_quad_clean.evt
Size (bytes)902,571,840203,647,680
Size860.8 MB 194.2 MB
Events in quadrant A9,237,2641,371,907
Events in quadrant B7,141,1791,399,129
Events in quadrant C6,378,6791,348,044
Events in quadrant D9,628,2991,132,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386443
B0299753
C0285513
D0380663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132293362.539875%
B132293902.948069%
C132302702.040816%
D1323011718.851096%

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 14464 13229 28 28 0.19% 0.21%
B 14464 13229 69 69 0.48% 0.52%
C 14465 13230 81 81 0.56% 0.61%
D 14465 13230 954 954 6.60% 7.21%

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 3171321 10134.08 1508 1472 312.8
A 13 248 76431 239.65 1508 1472 312.8
A 7 3 59666 186.05 1508 1472 312.8
B 0 219 293283 970.95 1509 1460 300.6
B 4 173 236873 783.26 1509 1460 300.6
B 5 255 193713 639.66 1509 1460 300.6
C 14 254 349083 999.32 1475 1481 347.8
C 15 158 168909 481.34 1475 1481 347.8
C 3 233 50580 141.16 1475 1481 347.8
D 2 249 1281959 3614.15 1419 1375 354.3
D 4 221 693975 1954.7 1419 1375 354.3
D 8 240 581755 1637.99 1419 1375 354.3

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