ASTROSAT CZTI

Data Quality Report

Orbit 19845

Creation date: 2024-06-27T18:07:49.515875
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/AS1T03_118T01_9000002962_19845cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19845cztM0_level2_quad_clean.evt
Size (bytes)599,451,840106,182,720
Size571.7 MB 101.3 MB
Events in quadrant A6,926,897658,113
Events in quadrant B3,270,055747,671
Events in quadrant C3,265,182713,399
Events in quadrant D4,276,751667,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248282
B0135242
C0134292
D0166892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6146128920.972991%
B6146901.464367%
C6146741.204035%
D61464387.126586%

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 8861 6148 985 985 11.12% 16.02%
B 8861 6148 6 6 0.07% 0.10%
C 8861 6148 0 0 0.00% 0.00%
D 8861 6148 317 317 3.58% 5.16%

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 14 238 3771463 25350.61 740 728 148.7
A 5 16 268000 1796.87 740 728 148.7
A 14 254 43355 286.58 740 728 148.7
B 7 220 52913 341.29 814 795 152.7
B 12 111 17998 112.65 814 795 152.7
B 11 111 15674 97.43 814 795 152.7
C 14 238 125727 677.07 795 802 184.5
C 9 221 33539 177.43 795 802 184.5
C 13 61 5432 25.09 795 802 184.5
D 12 218 717892 3799.12 777 758 188.8
D 1 52 437909 2315.87 777 758 188.8
D 12 17 101182 532.01 777 758 188.8

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