ASTROSAT CZTI

Data Quality Report

Orbit 43461

Creation date: 2024-06-27T22:52:15.001238
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_9000005874_43461cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43461cztM0_level2_quad_clean.evt
Size (bytes)330,652,80087,076,800
Size315.3 MB 83.0 MB
Events in quadrant A3,341,019577,228
Events in quadrant B3,093,278593,019
Events in quadrant C2,380,413580,582
Events in quadrant D3,021,397522,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133632
B0127492
C0104812
D0127032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5181581.119475%
B51811392.682880%
C518130.057904%
D5181851.640610%

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 7304 5182 41 41 0.56% 0.79%
B 7304 5182 105 105 1.44% 2.03%
C 7304 5182 1 1 0.01% 0.02%
D 7304 5182 97 97 1.33% 1.87%

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 572325 5056.75 548 537 113.1
A 15 237 333210 2942.08 548 537 113.1
A 15 222 286540 2529.34 548 537 113.1
B 0 189 568518 5387.86 550 535 105.4
B 0 199 169745 1605.12 550 535 105.4
B 0 245 165731 1567.04 550 535 105.4
C 15 214 228989 1795.96 543 547 127.2
C 3 233 17391 132.42 543 547 127.2
C 14 254 10163 75.6 543 547 127.2
D 1 52 416152 3218.73 532 517 129.1
D 13 249 318779 2464.66 532 517 129.1
D 7 96 60151 461.81 532 517 129.1

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