ASTROSAT CZTI

Data Quality Report

Orbit 36164

Creation date: 2022-06-07T16:08:29.389224
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/AS1A11_059T08_9000005160_36164cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36164cztM0_level2_quad_clean.evt
Size (bytes)499,265,28061,796,160
Size476.1 MB 58.9 MB
Events in quadrant A3,200,360367,271
Events in quadrant B3,348,573384,653
Events in quadrant C3,667,884364,909
Events in quadrant D4,503,278341,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131973
B0136922
C0143682
D0172842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58991242.102051%
B5899931.576538%
C58991272.152907%
D58993586.068825%

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 7302 5900 82 82 1.12% 1.39%
B 7302 5900 54 54 0.74% 0.92%
C 7302 5900 98 98 1.34% 1.66%
D 7302 5900 301 301 4.12% 5.10%

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 9 143 388837 2831.42 674 660 137.1
A 10 83 184081 1337.9 674 660 137.1
A 8 144 10585 72.39 674 660 137.1
B 5 172 458809 3485.79 674 656 131.4
B 0 190 92417 698.15 674 656 131.4
B 15 32 51990 390.57 674 656 131.4
C 0 207 328780 2119.67 660 665 154.8
C 15 208 302038 1946.92 660 665 154.8
C 15 214 268221 1728.45 660 665 154.8
D 12 17 784087 4864.32 651 633 161.1
D 13 171 259582 1607.77 651 633 161.1
D 10 199 258117 1598.67 651 633 161.1

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