ASTROSAT CZTI

Data Quality Report

Orbit 19993

Creation date: 2024-06-27T18:09:49.288881
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/AS1A06_002T02_9000002982_19993cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19993cztM0_level2_quad_clean.evt
Size (bytes)530,568,000102,631,680
Size506.0 MB 97.9 MB
Events in quadrant A3,715,991662,391
Events in quadrant B3,888,905662,919
Events in quadrant C3,697,257638,739
Events in quadrant D4,271,033636,626

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158161
B0163891
C0157351
D0175961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7298971.329131%
B72981712.343108%
C72981652.260893%
D72982573.521513%

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 7627 7298 26 26 0.34% 0.36%
B 7627 7297 13 13 0.17% 0.18%
C 7627 7297 2 2 0.03% 0.03%
D 7627 7297 199 199 2.61% 2.73%

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 14 238 185793 1005.8 904 885 183.8
A 14 254 39532 210.22 904 885 183.8
A 13 252 8638 42.17 904 885 183.8
B 7 220 167973 959.77 903 879 174.1
B 0 197 87868 499.66 903 879 174.1
B 0 245 29601 164.98 903 879 174.1
C 14 238 135399 652.45 871 874 206.2
C 3 233 121499 585.03 871 874 206.2
C 0 207 40135 190.42 871 874 206.2
D 1 52 802963 3755.4 877 849 213.6
D 7 96 91607 424.92 877 849 213.6
D 2 234 30712 139.81 877 849 213.6

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