ASTROSAT CZTI

Data Quality Report

Orbit 40052

Creation date: 2024-06-27T22:11:43.695783
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_054T03_9000005516_40052cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40052cztM0_level2_quad_clean.evt
Size (bytes)387,673,92089,277,120
Size369.7 MB 85.1 MB
Events in quadrant A3,158,035591,051
Events in quadrant B2,374,395631,052
Events in quadrant C3,369,145597,908
Events in quadrant D5,032,562508,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127532
B0107511
C0136101
D0188151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53491913.570761%
B534970.130866%
C53491512.822958%
D534958210.880538%

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 8785 5351 127 127 1.45% 2.37%
B 8785 5351 0 0 0.00% 0.00%
C 8785 5351 117 117 1.33% 2.19%
D 8785 5351 532 532 6.06% 9.94%

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 439620 3684.77 585 574 119.2
A 13 248 402073 3369.65 585 574 119.2
A 9 143 27518 226.13 585 574 119.2
B 0 230 17569 145.95 595 578 116.4
B 12 111 14614 120.57 595 578 116.4
B 11 111 13275 109.07 595 578 116.4
C 9 187 778363 5645.76 583 586 137.8
C 15 214 222215 1608.77 583 586 137.8
C 14 254 65973 474.63 583 586 137.8
D 12 227 1851560 13678.34 553 537 135.3
D 2 250 356352 2629.33 553 537 135.3
D 1 47 310304 2289.06 553 537 135.3

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