ASTROSAT CZTI

Data Quality Report

Orbit 28492

Creation date: 2024-06-27T19:52:23.290303
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_110T04_9000004094_28492cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28492cztM0_level2_quad_clean.evt
Size (bytes)536,293,44080,919,360
Size511.4 MB 77.2 MB
Events in quadrant A2,850,124550,820
Events in quadrant B3,859,828540,658
Events in quadrant C2,949,360545,149
Events in quadrant D6,187,680407,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152412670
B0183923028
C0153322592
D03389911937

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014725
B014824
C014826
D014814

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B041
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59551312.199832%
B58973385.731728%
C60051792.980849%
D5275145327.545024%

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 7652 6488 0 0 0.00% 0.00%
B 7651 6488 145 145 1.90% 2.23%
C 7651 6527 0 0 0.00% 0.00%
D 7652 5605 1195 1195 15.62% 21.32%

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 9107 55.75 737 720 150.4
A 3 137 7653 46.09 737 720 150.4
A 0 226 6280 36.96 737 720 150.4
B 10 245 1016899 7197.99 720 702 141.2
B 12 111 17958 122.23 720 702 141.2
B 11 111 16305 110.52 720 702 141.2
C 14 238 113456 657.29 715 718 171.5
C 7 247 18264 102.3 715 718 171.5
C 8 128 10600 57.61 715 718 171.5
D 1 52 3780728 29396.65 529 511 128.6
D 8 195 232010 1800.24 529 511 128.6
D 12 233 112985 874.65 529 511 128.6

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