ASTROSAT CZTI

Data Quality Report

Orbit 37843

Creation date: 2024-06-27T21:45:12.764285
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/AS1C07_001T12_9000005352_37843cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37843cztM0_level2_quad_clean.evt
Size (bytes)459,535,68075,764,160
Size438.2 MB 72.3 MB
Events in quadrant A2,833,700507,021
Events in quadrant B3,056,159501,426
Events in quadrant C3,055,041476,103
Events in quadrant D4,594,662420,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119293
B0129252
C0125372
D0174912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5564160.287563%
B55641101.976995%
C5564921.653487%
D55654377.852650%

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 7118 5565 9 9 0.13% 0.16%
B 7118 5565 87 87 1.22% 1.56%
C 7118 5565 84 84 1.18% 1.51%
D 7119 5566 397 397 5.58% 7.13%

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 370374 3013.05 611 598 122.7
A 9 143 30296 241.99 611 598 122.7
A 12 189 24707 196.45 611 598 122.7
B 5 172 361960 3129.8 601 585 115.5
B 0 229 73884 634.83 601 585 115.5
B 4 81 66607 571.8 601 585 115.5
C 1 23 310834 2238.05 592 596 138.6
C 15 214 233304 1678.75 592 596 138.6
C 0 10 161432 1160.27 592 596 138.6
D 1 52 722729 5136.9 580 564 140.6
D 13 249 552120 3923.33 580 564 140.6
D 2 250 411464 2922.81 580 564 140.6

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