ASTROSAT CZTI

Data Quality Report

Orbit 39156

Creation date: 2024-06-27T22:01:12.060272
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/AS1A12_054T02_9000005444_39156cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39156cztM0_level2_quad_clean.evt
Size (bytes)337,158,72099,377,280
Size321.5 MB 94.8 MB
Events in quadrant A2,989,914691,913
Events in quadrant B2,550,830699,172
Events in quadrant C2,658,704648,143
Events in quadrant D3,873,160603,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119003
B0106822
C0107382
D0150182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5241150.286205%
B5241120.228964%
C524150.095402%
D52411001.908033%

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 7274 5242 6 6 0.08% 0.11%
B 7274 5242 0 0 0.00% 0.00%
C 7274 5242 1 1 0.01% 0.02%
D 7274 5242 81 81 1.11% 1.55%

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 438757 3384.92 645 632 129.4
A 13 248 23454 176.32 645 632 129.4
A 15 223 18690 139.51 645 632 129.4
B 5 184 28615 232.97 632 617 120.2
B 5 172 18194 146.26 632 617 120.2
B 0 213 17147 137.54 632 617 120.2
C 15 214 220813 1551.72 614 618 141.9
C 9 187 27348 188.37 614 618 141.9
C 15 208 9742 64.3 614 618 141.9
D 12 235 811931 5353.41 619 601 151.6
D 2 249 287909 1895.75 619 601 151.6
D 5 222 245382 1615.14 619 601 151.6

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