ASTROSAT CZTI

Data Quality Report

Orbit 31609

Creation date: 2024-06-27T20:30:42.252812
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/AS1A10_094T76_9000004616_31609cztM0_level2.evt modeM0/AS1A10_094T76_9000004616_31609cztM0_level2_quad_clean.evt
Size (bytes)259,306,56063,457,920
Size247.3 MB 60.5 MB
Events in quadrant A1,550,244437,011
Events in quadrant B2,463,624437,878
Events in quadrant C1,871,195417,330
Events in quadrant D1,759,168411,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065551
B093843
C074151
D072451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3051521.704359%
B3050872.852459%
C30501344.393443%
D3050742.426230%

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 4096 3052 0 0 0.00% 0.00%
B 4095 3051 0 0 0.00% 0.00%
C 4095 3051 34 34 0.83% 1.11%
D 4095 3051 22 22 0.54% 0.72%

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 13 254 6000 69.31 401 393 80.9
A 3 137 3938 43.82 401 393 80.9
A 0 226 3415 37.36 401 393 80.9
B 6 159 852296 11332.42 395 384 75.2
B 4 80 34165 449.37 395 384 75.2
B 12 111 9042 115.17 395 384 75.2
C 3 233 286826 3216.1 381 383 89.1
C 14 238 61895 690.64 381 383 89.1
C 0 10 13891 151.66 381 383 89.1
D 8 195 126538 1367.48 388 378 92.3
D 12 218 63252 681.51 388 378 92.3
D 13 249 42089 452.12 388 378 92.3

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