ASTROSAT CZTI

Data Quality Report

Orbit 43693

Creation date: 2024-06-27T22:54:37.149222
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/AS1A13_008T01_9000005898_43693cztM0_level2.fits modeM0/AS1A13_008T01_9000005898_43693cztM0_level2_quad_clean.evt
Size (bytes)831,620,160109,923,840
Size793.1 MB 104.8 MB
Events in quadrant A12,691,913675,244
Events in quadrant B3,899,696804,303
Events in quadrant C7,876,294691,675
Events in quadrant D5,794,877684,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423591
B0159071
C0281032
D0217871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6744312346.307829%
B67442012.980427%
C6743153922.823669%
D67436529.669287%

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 7714 6745 2814 2814 36.48% 41.72%
B 7714 6745 54 54 0.70% 0.80%
C 7713 6744 980 980 12.71% 14.53%
D 7713 6744 417 417 5.41% 6.18%

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 4733602 33136.46 684 672 142.8
A 14 63 4409323 30866.1 684 672 142.8
A 10 83 767654 5369.84 684 672 142.8
B 5 235 386094 2469.5 795 772 156.0
B 4 206 153917 981.49 795 772 156.0
B 5 172 73856 468.39 795 772 156.0
C 15 157 2568435 15428.38 704 710 166.4
C 3 233 1801024 10817.33 704 710 166.4
C 15 158 409839 2458.28 704 710 166.4
D 5 235 528230 2760.41 759 738 191.1
D 2 249 445365 2326.77 759 738 191.1
D 13 171 391792 2046.42 759 738 191.1

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