ASTROSAT CZTI

Data Quality Report

Orbit 38754

Creation date: 2024-06-27T21:56:00.867334
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_054T01_9000005392_38754cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38754cztM0_level2_quad_clean.evt
Size (bytes)316,768,32087,652,800
Size302.1 MB 83.6 MB
Events in quadrant A2,784,407590,055
Events in quadrant B2,368,637606,845
Events in quadrant C2,615,991569,631
Events in quadrant D3,552,946524,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113293
B0105912
C0109232
D0141902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183370.713872%
B5183250.482346%
C5183200.385877%
D51831062.045148%

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 7187 5184 27 27 0.38% 0.52%
B 7187 5184 16 16 0.22% 0.31%
C 7187 5184 25 25 0.35% 0.48%
D 7187 5184 88 88 1.22% 1.70%

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 397992 3375.77 581 571 117.7
A 9 143 94857 800.88 581 571 117.7
A 13 248 16838 138.17 581 571 117.7
B 5 184 52631 466.82 576 563 111.5
B 4 171 16836 145.9 576 563 111.5
B 12 111 13988 120.36 576 563 111.5
C 15 214 232238 1759.87 563 566 131.6
C 0 10 98714 745.57 563 566 131.6
C 14 254 53635 403.13 563 566 131.6
D 2 16 1030543 7443.55 561 547 138.4
D 12 227 167854 1209.09 561 547 138.4
D 10 118 81334 583.83 561 547 138.4

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