ASTROSAT CZTI

Data Quality Report

Orbit 39287

Creation date: 2024-06-27T22:02:43.293163
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_025T12_9000005458_39287cztM0_level2.fits modeM0/AS1A12_025T12_9000005458_39287cztM0_level2_quad_clean.evt
Size (bytes)525,349,44088,600,320
Size501.0 MB 84.5 MB
Events in quadrant A2,982,457669,744
Events in quadrant B2,626,987693,008
Events in quadrant C2,645,912654,165
Events in quadrant D10,787,472302,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119023
B0109262
C0106492
D0355972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5194130.250289%
B5194320.616095%
C519420.038506%
D5194294056.603774%

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 7287 5195 5 5 0.07% 0.10%
B 7287 5195 17 17 0.23% 0.33%
C 7287 5195 0 0 0.00% 0.00%
D 7287 5195 2913 2913 39.98% 56.07%

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 425848 3345.92 631 620 127.1
A 15 222 107932 844.39 631 620 127.1
A 3 1 8265 60.15 631 620 127.1
B 5 172 80691 670.21 626 609 119.5
B 5 255 61292 507.86 626 609 119.5
B 12 111 14512 116.35 626 609 119.5
C 15 214 219851 1540.91 614 622 142.3
C 9 187 16687 112.92 614 622 142.3
C 3 233 9127 59.78 614 622 142.3
D 12 235 8591148 75426.28 469 458 113.9
D 5 222 212317 1860.12 469 458 113.9
D 13 249 86166 752.52 469 458 113.9

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