ASTROSAT CZTI

Data Quality Report

Orbit 43632

Creation date: 2024-06-27T22:53:52.537279
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/AS1A12_095T02_9000005892_43632cztM0_level2.fits modeM0/AS1A12_095T02_9000005892_43632cztM0_level2_quad_clean.evt
Size (bytes)929,136,960101,727,360
Size886.1 MB 97.0 MB
Events in quadrant A5,215,243770,195
Events in quadrant B4,343,289792,297
Events in quadrant C15,391,502443,063
Events in quadrant D8,948,721624,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203681
B0171921
C0501491
D0311061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64013956.170911%
B64021762.749141%
C6402563788.050609%
D6402158024.679788%

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 7556 6401 167 167 2.21% 2.61%
B 7557 6402 74 74 0.98% 1.16%
C 7556 6401 5522 5522 73.08% 86.27%
D 7557 6402 1464 1464 19.37% 22.87%

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 0 228 878970 5565.2 769 755 157.8
A 10 83 779469 4934.67 769 755 157.8
A 9 240 226586 1431.08 769 755 157.8
B 5 235 471634 3198.4 768 747 147.2
B 4 206 452457 3068.14 768 747 147.2
B 0 183 65345 438.77 768 747 147.2
C 15 142 9162236 86943.49 448 449 105.4
C 15 174 1767168 16765.8 448 449 105.4
C 3 233 1395643 13240.11 448 449 105.4
D 4 216 1038088 5678.62 700 678 182.7
D 4 212 668640 3656.32 700 678 182.7
D 4 221 638305 3490.27 700 678 182.7

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