ASTROSAT CZTI

Data Quality Report

Orbit 40480

Creation date: 2024-06-27T22:16:37.835624
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_022T01_9000005540_40480cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40480cztM0_level2_quad_clean.evt
Size (bytes)335,839,68092,606,400
Size320.3 MB 88.3 MB
Events in quadrant A2,976,311638,222
Events in quadrant B2,645,564643,463
Events in quadrant C2,834,870626,425
Events in quadrant D3,513,463483,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126583
B0123022
C0123212
D0146662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5908110.186188%
B5908601.015572%
C5908110.186188%
D5908118320.023697%

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 7251 5909 3 3 0.04% 0.05%
B 7251 5909 51 51 0.70% 0.86%
C 7251 5909 7 7 0.10% 0.12%
D 7251 5908 184 184 2.54% 3.11%

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 512060 4010.42 622 612 127.5
A 12 189 28687 220.14 622 612 127.5
A 9 191 17474 132.22 622 612 127.5
B 10 246 156015 1297.98 617 599 119.7
B 3 112 30544 250.09 617 599 119.7
B 5 255 15998 128.61 617 599 119.7
C 15 214 255861 1777.6 612 615 143.6
C 9 187 85441 590.75 612 615 143.6
C 10 20 79514 549.47 612 615 143.6
D 2 250 442145 3257.22 547 531 135.6
D 12 227 381038 2806.51 547 531 135.6
D 12 191 252148 1855.86 547 531 135.6

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