ASTROSAT CZTI

Data Quality Report

Orbit 38457

Creation date: 2024-06-27T21:53:01.205546
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_018T01_9000005386_38457cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38457cztM0_level2_quad_clean.evt
Size (bytes)354,041,28091,134,720
Size337.6 MB 86.9 MB
Events in quadrant A2,849,795620,371
Events in quadrant B2,590,416631,855
Events in quadrant C2,728,243600,904
Events in quadrant D4,508,002520,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118553
B0114172
C0116302
D0172382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A550990.163369%
B5509270.490107%
C5509200.363042%
D55094157.533128%

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 7152 5510 5 5 0.07% 0.09%
B 7152 5510 18 18 0.25% 0.33%
C 7152 5510 16 16 0.22% 0.29%
D 7152 5510 362 362 5.06% 6.57%

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 399953 3218.51 614 602 124.1
A 12 189 38148 302.6 614 602 124.1
A 13 248 16112 125.0 614 602 124.1
B 0 183 84254 711.96 608 591 117.5
B 5 184 31365 261.88 608 591 117.5
B 15 201 22977 190.5 608 591 117.5
C 15 214 233153 1694.92 591 596 137.2
C 14 254 121104 878.28 591 596 137.2
C 2 16 35227 252.4 591 596 137.2
D 13 249 810655 5821.64 572 556 139.2
D 12 235 537766 3860.57 572 556 139.2
D 10 118 406505 2917.29 572 556 139.2

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