ASTROSAT CZTI

Data Quality Report

Orbit 12409

Creation date: 2024-06-27T16:26:53.129041
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/AS1A04_023T01_9000001842_12409cztM0_level2.evt modeM0/AS1A04_023T01_9000001842_12409cztM0_level2_quad_clean.evt
Size (bytes)653,895,36081,645,120
Size623.6 MB 77.9 MB
Events in quadrant A5,225,153474,304
Events in quadrant B5,002,449488,642
Events in quadrant C3,753,516492,467
Events in quadrant D5,290,381470,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205884
B0198303
C0165603
D0210243

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78474916.257168%
B78475817.404103%
C78472693.428062%
D78473774.804384%

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 8323 7849 164 164 1.97% 2.09%
B 8323 7848 220 220 2.64% 2.80%
C 8323 7849 1 1 0.01% 0.01%
D 8323 7849 76 76 0.91% 0.97%

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 14 237 806008 4003.66 967 944 201.1
A 13 251 294485 1459.81 967 944 201.1
A 1 162 141443 698.71 967 944 201.1
B 4 239 688795 3722.44 952 927 184.8
B 3 64 386451 2086.29 952 927 184.8
B 3 209 61259 326.49 952 927 184.8
C 15 208 23619 101.58 952 955 223.1
C 8 128 9727 39.32 952 955 223.1
C 13 61 6788 26.14 952 955 223.1
D 1 52 1287004 5535.85 949 920 232.3
D 7 80 151825 649.56 949 920 232.3
D 13 104 85146 362.54 949 920 232.3

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