ASTROSAT CZTI

Data Quality Report

Orbit 50786

Creation date: 2025-02-17T03:41:29.542945
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/AS1C07_001T01_9000006450_50786cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50786cztM0_level2_quad_clean.evt
Size (bytes)595,143,36097,447,680
Size567.6 MB 92.9 MB
Events in quadrant A3,989,065646,062
Events in quadrant B4,340,986697,464
Events in quadrant C6,631,438586,675
Events in quadrant D6,533,554538,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168583
B0177993
C0245296
D0241663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69101892.735166%
B69102383.444284%
C69096549.465914%
D690980911.709365%

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 7690 6912 119 119 1.55% 1.72%
B 7690 6911 83 83 1.08% 1.20%
C 7689 6911 537 537 6.98% 7.77%
D 7689 6911 613 613 7.97% 8.87%

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 3 114 303347 1681.48 723 708 180.0
A 12 80 251417 1392.96 723 708 180.0
A 8 38 83473 459.85 723 708 180.0
B 4 170 470243 3063.13 722 697 153.3
B 7 0 180720 1174.4 722 697 153.3
B 5 172 177329 1152.28 722 697 153.3
C 5 10 2779648 14556.69 697 690 190.9
C 12 2 231153 1207.21 697 690 190.9
C 12 252 125206 652.24 697 690 190.9
D 2 216 1416037 7516.71 673 650 188.3
D 7 96 476173 2525.37 673 650 188.3
D 2 249 347312 1841.02 673 650 188.3

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