ASTROSAT CZTI

Data Quality Report

Orbit 20803

Creation date: 2024-06-27T18:19:46.097972
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/AS1A05_013T01_9000003070_20803cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20803cztM0_level2_quad_clean.evt
Size (bytes)507,179,52096,600,960
Size483.7 MB 92.1 MB
Events in quadrant A3,137,285638,757
Events in quadrant B3,454,954625,364
Events in quadrant C3,146,920610,505
Events in quadrant D5,172,427590,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136012
B0145211
C0137151
D0198581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6605610.923543%
B6605861.302044%
C6606821.241296%
D66064446.721163%

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 7195 6606 0 0 0.00% 0.00%
B 7195 6606 12 12 0.17% 0.18%
C 7196 6607 3 3 0.04% 0.05%
D 7196 6607 370 370 5.14% 5.60%

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 13 252 10259 57.86 814 798 163.5
A 0 226 7152 38.86 814 798 163.5
A 3 137 6450 34.56 814 798 163.5
B 7 220 99194 644.32 800 780 152.7
B 0 189 48169 310.26 800 780 152.7
B 0 197 45931 295.61 800 780 152.7
C 14 238 120829 670.3 768 774 179.1
C 9 54 23736 128.2 768 774 179.1
C 13 61 5468 26.21 768 774 179.1
D 1 20 1717476 9168.08 778 757 187.2
D 9 1 198267 1054.8 778 757 187.2
D 1 52 91092 482.43 778 757 187.2

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