ASTROSAT CZTI

Data Quality Report

Orbit 28631

Creation date: 2024-06-27T19:54:13.154848
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_045T06_9000004108_28631cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28631cztM0_level2_quad_clean.evt
Size (bytes)469,681,92079,830,720
Size447.9 MB 76.1 MB
Events in quadrant A3,093,450514,332
Events in quadrant B3,337,490517,328
Events in quadrant C3,107,132506,398
Events in quadrant D4,301,374482,570

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123411
B0132071
C0123681
D0167881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5671560.987480%
B56721242.186178%
C5672831.463329%
D56722294.037377%

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 6976 5671 0 0 0.00% 0.00%
B 6977 5672 46 46 0.66% 0.81%
C 6977 5673 0 0 0.00% 0.00%
D 6977 5672 155 155 2.22% 2.73%

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 1 113 16948 102.25 794 780 158.1
A 13 254 10623 62.25 794 780 158.1
A 3 137 6963 39.1 794 780 158.1
B 10 245 295981 2045.72 771 752 144.3
B 12 111 16903 111.91 771 752 144.3
B 11 111 15382 101.38 771 752 144.3
C 14 238 126311 710.65 761 769 176.7
C 7 247 7843 40.04 761 769 176.7
C 13 61 5232 25.26 761 769 176.7
D 1 52 993935 5616.34 761 744 176.8
D 8 195 290248 1637.1 761 744 176.8
D 2 250 83762 469.45 761 744 176.8

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