ASTROSAT CZTI

Data Quality Report

Orbit 39248

Creation date: 2024-06-27T22:02:17.826770
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_093T02_9000005452_39248cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39248cztM0_level2_quad_clean.evt
Size (bytes)458,470,08091,814,400
Size437.2 MB 87.6 MB
Events in quadrant A3,176,903637,364
Events in quadrant B3,102,454646,631
Events in quadrant C2,679,939616,164
Events in quadrant D7,571,598483,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129973
B0129492
C0114192
D0264572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5664981.730226%
B5664761.341808%
C566460.105932%
D5664134923.817090%

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 7127 5665 53 53 0.74% 0.94%
B 7127 5664 46 46 0.65% 0.81%
C 7127 5665 1 1 0.01% 0.02%
D 7126 5664 1144 1144 16.05% 20.20%

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 437303 3360.21 633 620 130.0
A 13 248 288040 2211.66 633 620 130.0
A 13 254 7857 55.69 633 620 130.0
B 5 172 383504 3125.7 628 611 122.5
B 0 190 100666 816.79 628 611 122.5
B 5 184 82896 671.72 628 611 122.5
C 15 214 256716 1758.77 618 621 145.6
C 0 10 13288 86.99 618 621 145.6
C 13 61 4257 24.97 618 621 145.6
D 12 235 4339465 31445.05 564 548 138.0
D 5 222 670821 4857.61 564 548 138.0
D 12 227 115354 832.02 564 548 138.0

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