ASTROSAT CZTI

Data Quality Report

Orbit 17085

Creation date: 2024-06-27T17:31:51.771203
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/AS1A05_004T04_9000002534_17085cztM0_level2.evt modeM0/AS1A05_004T04_9000002534_17085cztM0_level2_quad_clean.evt
Size (bytes)588,533,76093,314,880
Size561.3 MB 89.0 MB
Events in quadrant A3,937,394572,243
Events in quadrant B4,202,132578,448
Events in quadrant C5,056,115550,324
Events in quadrant D4,061,979545,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174222
B0178792
C0203792
D0179072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83333674.404176%
B83333934.716189%
C83334445.328213%
D83342953.539717%

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 8568 8336 0 0 0.00% 0.00%
B 8568 8336 8 8 0.09% 0.10%
C 8568 8336 15 15 0.18% 0.18%
D 8569 8337 38 38 0.44% 0.46%

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 4 2 21810 100.22 1014 988 207.8
A 0 254 12202 53.97 1014 988 207.8
A 0 226 8937 38.26 1014 988 207.8
B 7 220 105731 540.46 1014 986 193.8
B 0 219 37727 189.57 1014 986 193.8
B 15 35 29001 144.55 1014 986 193.8
C 3 233 701445 3068.35 970 971 228.3
C 9 54 388459 1697.35 970 971 228.3
C 14 238 148092 644.45 970 971 228.3
D 10 70 122995 504.75 989 958 241.8
D 1 52 115691 474.54 989 958 241.8
D 2 234 36448 146.79 989 958 241.8

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