ASTROSAT CZTI

Data Quality Report

Orbit 38171

Creation date: 2024-06-27T21:49:17.538068
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/AS1A07_145T01_9000005370_38171cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38171cztM0_level2_quad_clean.evt
Size (bytes)432,083,52095,428,800
Size412.1 MB 91.0 MB
Events in quadrant A2,883,719683,613
Events in quadrant B2,739,946711,506
Events in quadrant C2,773,008678,355
Events in quadrant D7,184,687444,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117183
B0114012
C0112632
D0247792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5307110.207273%
B5307130.244959%
C5307120.226116%
D5307170032.033164%

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 7310 5308 9 9 0.12% 0.17%
B 7310 5308 3 3 0.04% 0.06%
C 7310 5308 9 9 0.12% 0.17%
D 7310 5307 1749 1749 23.93% 32.96%

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 360146 2797.47 634 622 128.5
A 12 189 33925 259.13 634 622 128.5
A 12 16 13178 97.7 634 622 128.5
B 0 230 108844 881.87 640 624 122.7
B 4 171 73176 591.22 640 624 122.7
B 0 229 31992 255.61 640 624 122.7
C 15 214 222327 1509.99 631 637 146.8
C 0 10 27876 185.53 631 637 146.8
C 5 250 24900 165.26 631 637 146.8
D 12 227 4718364 37402.74 528 515 126.1
D 10 203 126125 995.83 528 515 126.1
D 12 235 98411 776.11 528 515 126.1

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