ASTROSAT CZTI

Data Quality Report

Orbit 39603

Creation date: 2024-06-27T22:06:40.126633
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_39603cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39603cztM0_level2_quad_clean.evt
Size (bytes)382,109,76089,147,520
Size364.4 MB 85.0 MB
Events in quadrant A2,717,088616,327
Events in quadrant B2,400,270626,441
Events in quadrant C4,814,118563,202
Events in quadrant D3,805,055526,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113172
B0107911
C0178271
D0150011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524490.171625%
B5244190.362319%
C52443156.006865%
D52443276.235698%

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 7037 5245 1 1 0.01% 0.02%
B 7037 5245 11 11 0.16% 0.21%
C 7037 5245 313 313 4.45% 5.97%
D 7037 5245 293 293 4.16% 5.59%

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 405175 3367.46 589 577 120.1
A 6 10 14235 113.68 589 577 120.1
A 13 248 12102 95.92 589 577 120.1
B 5 255 55925 492.05 581 564 112.5
B 15 85 26223 228.06 581 564 112.5
B 5 172 25980 225.9 581 564 112.5
C 9 187 2163985 16556.41 561 563 130.7
C 15 214 228009 1740.62 561 563 130.7
C 15 208 202756 1547.36 561 563 130.7
D 12 227 701338 5110.08 563 546 137.1
D 13 249 398823 2904.18 563 546 137.1
D 13 171 190995 1388.73 563 546 137.1

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