ASTROSAT CZTI

Data Quality Report

Orbit 27044

Creation date: 2024-06-27T19:35:52.101135
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/AS1A09_120T02_9000003904_27044cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27044cztM0_level2_quad_clean.evt
Size (bytes)590,811,84093,695,040
Size563.4 MB 89.4 MB
Events in quadrant A5,799,260566,484
Events in quadrant B3,281,067636,764
Events in quadrant C3,264,078608,408
Events in quadrant D5,103,119566,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215500
B0137790
C0137100
D0195660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A656691913.996345%
B65672053.121669%
C65672053.121669%
D65675668.618852%

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 6690 6565 559 559 8.36% 8.51%
B 6692 6567 16 16 0.24% 0.24%
C 6692 6567 5 5 0.07% 0.08%
D 6692 6567 433 433 6.47% 6.59%

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 14 235 2666334 16608.17 786 771 160.5
A 6 16 92767 573.19 786 771 160.5
A 13 254 9861 56.64 786 771 160.5
B 0 189 39682 241.27 823 805 161.1
B 12 111 19345 115.06 823 805 161.1
B 11 111 17586 104.14 823 805 161.1
C 14 238 124855 661.16 796 804 187.6
C 15 208 25932 133.93 796 804 187.6
C 8 128 5540 25.24 796 804 187.6
D 1 52 1880097 10015.53 782 760 187.6
D 2 250 158713 841.78 782 760 187.6
D 11 176 79686 420.62 782 760 187.6

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