ASTROSAT CZTI

Data Quality Report

Orbit 29273

Creation date: 2024-06-27T20:02:07.560009
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_045T08_9000004208_29273cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29273cztM0_level2_quad_clean.evt
Size (bytes)719,380,80091,877,760
Size686.1 MB 87.6 MB
Events in quadrant A3,397,507586,806
Events in quadrant B3,782,728594,038
Events in quadrant C6,871,904554,303
Events in quadrant D7,253,516550,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147241
B0159021
C0256881
D0266041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7119530.744487%
B71201251.755618%
C712078310.997191%
D71204626.488764%

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 7354 7120 0 0 0.00% 0.00%
B 7355 7121 8 8 0.11% 0.11%
C 7355 7121 34 34 0.46% 0.48%
D 7355 7121 365 365 4.96% 5.13%

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 14020 73.79 879 863 178.3
A 3 137 8745 44.21 879 863 178.3
A 0 226 7451 36.95 879 863 178.3
B 0 229 148318 867.95 872 848 169.9
B 10 245 109160 637.48 872 848 169.9
B 0 183 47305 273.43 872 848 169.9
C 3 233 3335122 17332.44 816 822 192.4
C 14 238 200583 1038.4 816 822 192.4
C 14 254 101190 521.73 816 822 192.4
D 8 195 1620366 8051.28 837 814 201.2
D 1 52 1378563 6849.2 837 814 201.2
D 7 238 526000 2610.86 837 814 201.2

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