ASTROSAT CZTI

Data Quality Report

Orbit 18949

Creation date: 2024-06-27T17:56:56.391496
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/AS1T03_090T01_9000002822_18949cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18949cztM0_level2_quad_clean.evt
Size (bytes)756,622,08099,820,800
Size721.6 MB 95.2 MB
Events in quadrant A6,555,328602,936
Events in quadrant B4,571,113687,197
Events in quadrant C3,098,620692,746
Events in quadrant D8,263,417598,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235071
B0175251
C0129951
D0289661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6305135521.490880%
B63064967.865525%
C63061292.045671%
D6306171827.243895%

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 7345 6305 936 936 12.74% 14.85%
B 7346 6307 271 271 3.69% 4.30%
C 7346 6307 0 0 0.00% 0.00%
D 7346 6307 1046 1046 14.24% 16.58%

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 14 235 3844884 27529.03 703 690 139.6
A 13 254 6766 43.51 703 690 139.6
A 0 226 6049 38.38 703 690 139.6
B 3 112 1337164 9350.64 768 748 142.9
B 7 220 143980 1002.17 768 748 142.9
B 0 189 60347 417.0 768 748 142.9
C 14 238 122009 693.3 762 769 174.9
C 13 61 5453 26.79 762 769 174.9
C 3 233 4137 19.26 762 769 174.9
D 7 238 4928314 28617.96 705 684 172.2
D 12 218 369113 2139.71 705 684 172.2
D 12 233 186894 1081.44 705 684 172.2

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