ASTROSAT CZTI

Data Quality Report

Orbit 40166

Creation date: 2024-06-27T22:13:05.235232
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_068T02_9000005524_40166cztM0_level2.fits modeM0/AS1A12_068T02_9000005524_40166cztM0_level2_quad_clean.evt
Size (bytes)882,567,36099,262,080
Size841.7 MB 94.7 MB
Events in quadrant A3,925,956838,667
Events in quadrant B3,582,786867,635
Events in quadrant C19,944,88315,154
Events in quadrant D4,605,336738,093

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162311
B0161621
C0646621
D0192881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A785560.076384%
B7855170.216423%
C7855774798.625080%
D78552593.297263%

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 9439 7855 2 2 0.02% 0.03%
B 9439 7855 5 5 0.05% 0.06%
C 9438 7854 7643 7643 80.98% 97.31%
D 9439 7856 256 256 2.71% 3.26%

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 514998 2915.76 863 843 176.3
A 2 79 44429 247.18 863 843 176.3
A 13 6 18583 100.6 863 843 176.3
B 4 171 83438 503.4 852 827 164.1
B 5 172 81175 489.61 852 827 164.1
B 0 230 21728 127.36 852 827 164.1
C 9 187 18410386 226726.41 348 349 81.2
C 15 214 138262 1698.45 348 349 81.2
C 9 203 20479 247.91 348 349 81.2
D 12 233 634689 3132.64 828 802 202.3
D 12 0 296803 1462.82 828 802 202.3
D 13 249 159892 786.22 828 802 202.3

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