ASTROSAT CZTI

Data Quality Report

Orbit 23728

Creation date: 2024-06-27T18:58:01.546903
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/AS1A07_027T06_9000003508_23728cztM0_level2.evt modeM0/AS1A07_027T06_9000003508_23728cztM0_level2_quad_clean.evt
Size (bytes)418,109,76077,209,920
Size398.7 MB 73.6 MB
Events in quadrant A2,738,789491,570
Events in quadrant B3,272,611489,825
Events in quadrant C2,873,684483,624
Events in quadrant D3,386,807471,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118591
B0132971
C0120991
D0137161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57391061.847012%
B57391833.188709%
C57391382.404600%
D57401542.682927%

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 6354 5739 0 0 0.00% 0.00%
B 6354 5739 28 28 0.44% 0.49%
C 6354 5739 1 1 0.02% 0.02%
D 6355 5740 73 73 1.15% 1.27%

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 10607 68.13 710 694 145.5
A 3 137 6381 39.09 710 694 145.5
A 0 226 5923 35.94 710 694 145.5
B 0 229 143148 1050.49 700 684 135.6
B 3 64 123833 908.07 700 684 135.6
B 15 33 95300 697.67 700 684 135.6
C 14 238 105364 650.45 679 684 160.9
C 7 247 66035 406.07 679 684 160.9
C 10 9 33132 201.62 679 684 160.9
D 1 52 360097 2128.93 687 667 168.8
D 7 238 108753 640.2 687 667 168.8
D 12 227 96882 569.89 687 667 168.8

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