ASTROSAT CZTI

Data Quality Report

Orbit 42378

Creation date: 2024-06-27T22:39:36.221502
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/AS1C06_010T01_9000005800_42378cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42378cztM0_level2_quad_clean.evt
Size (bytes)339,903,36092,828,160
Size324.2 MB 88.5 MB
Events in quadrant A3,012,834618,599
Events in quadrant B2,842,298622,049
Events in quadrant C2,966,613607,050
Events in quadrant D3,312,532561,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126842
B0127552
C0127592
D0140202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5748170.295755%
B5748621.078636%
C5748931.617954%
D57481612.800974%

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 7060 5749 8 8 0.11% 0.14%
B 7060 5749 36 36 0.51% 0.63%
C 7060 5749 53 53 0.75% 0.92%
D 7060 5748 113 113 1.60% 1.97%

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 618093 4922.65 608 594 125.4
A 13 248 25270 196.72 608 594 125.4
A 13 6 13004 98.93 608 594 125.4
B 4 81 148514 1284.84 601 583 115.1
B 5 172 80001 689.78 601 583 115.1
B 5 255 58295 501.25 601 583 115.1
C 14 254 357538 2591.23 591 593 137.8
C 15 214 238720 1728.67 591 593 137.8
C 3 233 25100 177.91 591 593 137.8
D 12 6 271470 1870.79 590 573 144.8
D 12 233 123339 847.81 590 573 144.8
D 1 52 106788 733.51 590 573 144.8

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