ASTROSAT CZTI

Data Quality Report

Orbit 26678

Creation date: 2024-06-27T19:31:41.313227
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/AS1A09_145T01_9000003848_26678cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26678cztM0_level2_quad_clean.evt
Size (bytes)535,337,28093,104,640
Size510.5 MB 88.8 MB
Events in quadrant A3,593,161612,099
Events in quadrant B3,808,141612,912
Events in quadrant C3,630,997583,914
Events in quadrant D4,755,435573,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144690
B0150870
C0145990
D0180020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62591292.061032%
B62591983.163445%
C62591622.588273%
D625996015.337913%

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 7489 6260 0 0 0.00% 0.00%
B 7489 6260 41 41 0.55% 0.65%
C 7489 6260 1 1 0.01% 0.02%
D 7489 6259 187 187 2.50% 2.99%

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 13 153968 865.96 889 875 176.8
A 4 2 11972 62.77 889 875 176.8
A 13 254 11048 57.54 889 875 176.8
B 10 246 272926 1681.24 863 847 161.8
B 0 189 125705 771.53 863 847 161.8
B 12 111 18476 108.93 863 847 161.8
C 3 233 194986 1010.45 835 842 192.1
C 14 238 136527 706.19 835 842 192.1
C 5 37 21821 109.19 835 842 192.1
D 7 80 1526293 8177.58 766 748 186.6
D 1 52 119960 639.03 766 748 186.6
D 2 250 93919 499.44 766 748 186.6

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