ASTROSAT CZTI

Data Quality Report

Orbit 39438

Creation date: 2024-06-27T22:04:34.586454
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_077T06_9000005474_39438cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39438cztM0_level2_quad_clean.evt
Size (bytes)485,352,00093,859,200
Size462.9 MB 89.5 MB
Events in quadrant A6,376,552608,302
Events in quadrant B3,051,233665,122
Events in quadrant C3,183,478628,922
Events in quadrant D4,893,567524,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230293
B0130592
C0130462
D0186122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594065210.976431%
B5940961.616162%
C5940110.185185%
D594067611.380471%

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 7253 5941 620 620 8.55% 10.44%
B 7253 5941 56 56 0.77% 0.94%
C 7253 5941 5 5 0.07% 0.08%
D 7253 5941 573 573 7.90% 9.64%

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 15 222 3315634 24696.32 649 636 134.2
A 10 83 485194 3609.9 649 636 134.2
A 9 143 37131 271.88 649 636 134.2
B 5 172 256668 1998.33 654 635 128.1
B 8 3 99731 773.44 654 635 128.1
B 5 255 95543 740.76 654 635 128.1
C 15 214 247510 1635.85 642 646 150.9
C 9 187 196651 1298.83 642 646 150.9
C 14 254 135359 892.68 642 646 150.9
D 2 249 1074530 7151.82 606 587 150.2
D 12 227 934966 6222.41 606 587 150.2
D 12 0 312195 2075.12 606 587 150.2

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