ASTROSAT CZTI

Data Quality Report

Orbit 39548

Creation date: 2024-06-27T22:05:59.122285
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_9000005488_39548cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39548cztM0_level2_quad_clean.evt
Size (bytes)361,558,08089,991,360
Size344.8 MB 85.8 MB
Events in quadrant A3,158,001607,313
Events in quadrant B2,295,165637,891
Events in quadrant C4,198,106585,340
Events in quadrant D3,350,715550,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125433
B0100782
C0157932
D0133592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4905871.773700%
B4905170.346585%
C49053497.115189%
D49052044.159021%

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 6999 4906 70 70 1.00% 1.43%
B 6999 4906 9 9 0.13% 0.18%
C 6999 4906 339 339 4.84% 6.91%
D 6999 4906 175 175 2.50% 3.57%

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 15 222 512174 4548.2 555 544 112.5
A 10 83 407180 3614.84 555 544 112.5
A 13 248 38040 333.33 555 544 112.5
B 5 255 70916 663.2 561 546 106.1
B 12 111 12785 115.35 561 546 106.1
B 11 111 11587 104.06 561 546 106.1
C 9 187 1695348 13488.62 547 553 125.6
C 15 214 204759 1625.25 547 553 125.6
C 15 208 116220 920.58 547 553 125.6
D 12 227 587047 4478.33 542 527 131.0
D 12 0 251960 1919.8 542 527 131.0
D 7 38 131998 1003.84 542 527 131.0

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