ASTROSAT CZTI

Data Quality Report

Orbit 20802

Creation date: 2024-06-27T18:19:45.379649
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_20802cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20802cztM0_level2_quad_clean.evt
Size (bytes)482,705,28097,623,360
Size460.3 MB 93.1 MB
Events in quadrant A3,127,330658,645
Events in quadrant B3,647,385640,450
Events in quadrant C3,131,587625,510
Events in quadrant D4,279,564586,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132351
B0149771
C0133131
D0168451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6372851.333961%
B63721382.165725%
C63731001.569120%
D63734466.998274%

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 7357 6372 0 0 0.00% 0.00%
B 7357 6372 40 40 0.54% 0.63%
C 7358 6374 3 3 0.04% 0.05%
D 7358 6374 395 395 5.37% 6.20%

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 0 226 7249 39.5 814 798 163.3
A 3 137 6270 33.51 814 798 163.3
A 12 194 5845 30.9 814 798 163.3
B 7 220 171696 1133.1 793 774 150.8
B 3 64 146177 963.92 793 774 150.8
B 0 189 52777 344.75 793 774 150.8
C 14 238 120635 679.4 762 769 176.4
C 9 54 23516 128.93 762 769 176.4
C 7 247 15438 83.14 762 769 176.4
D 1 52 1109680 6075.31 762 742 182.5
D 7 38 91310 496.18 762 742 182.5
D 13 153 61200 331.22 762 742 182.5

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