ASTROSAT CZTI

Data Quality Report

Orbit 38640

Creation date: 2024-06-27T21:54:30.564839
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_061T03_9000005390_38640cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38640cztM0_level2_quad_clean.evt
Size (bytes)457,067,52099,311,040
Size435.9 MB 94.7 MB
Events in quadrant A4,426,624667,787
Events in quadrant B4,472,823663,243
Events in quadrant C3,070,964669,225
Events in quadrant D4,481,622586,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168053
B0170642
C0127472
D0172722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60141242.061856%
B60144507.482541%
C601480.133023%
D60143996.634519%

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 7416 6014 113 113 1.52% 1.88%
B 7416 6014 341 341 4.60% 5.67%
C 7416 6014 2 2 0.03% 0.03%
D 7416 6014 375 375 5.06% 6.24%

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 0 247 803163 5750.81 681 664 139.5
A 10 83 466347 3337.15 681 664 139.5
A 13 248 375146 2683.59 681 664 139.5
B 4 251 1560030 12173.32 665 647 128.1
B 4 171 93235 722.79 665 647 128.1
B 5 184 72846 563.62 665 647 128.1
C 15 214 243101 1542.14 669 673 157.2
C 3 110 129352 818.55 669 673 157.2
C 14 254 54534 342.62 669 673 157.2
D 12 233 692133 4322.35 652 634 160.0
D 2 249 311688 1944.3 652 634 160.0
D 13 249 278985 1739.89 652 634 160.0

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