ASTROSAT CZTI

Data Quality Report

Orbit 17056

Creation date: 2024-06-27T17:31:27.530445
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_004T01_9000002532_17056cztM0_level2.evt modeM0/AS1T03_004T01_9000002532_17056cztM0_level2_quad_clean.evt
Size (bytes)490,440,96085,017,600
Size467.7 MB 81.1 MB
Events in quadrant A3,116,694542,166
Events in quadrant B3,351,269546,832
Events in quadrant C4,713,018512,706
Events in quadrant D3,226,807516,050

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014410
B014410
C014410
D01448

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148161201
B0152971169
C0203091788
D0154601283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65391922.936229%
B65732433.696942%
C64743134.834724%
D65511822.778202%

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 7217 6943 1 1 0.01% 0.01%
B 7218 6979 16 16 0.22% 0.23%
C 7216 6924 28 28 0.39% 0.40%
D 7217 6962 45 45 0.62% 0.65%

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 4 2 25150 150.43 795 777 162.0
A 12 189 22775 135.77 795 777 162.0
A 0 226 7101 39.03 795 777 162.0
B 7 220 116220 745.5 798 777 154.9
B 0 197 41015 259.85 798 777 154.9
B 0 189 22791 142.16 798 777 154.9
C 3 233 1650886 9329.08 748 753 176.9
C 14 238 112627 632.48 748 753 176.9
C 9 160 12233 64.9 748 753 176.9
D 10 70 164170 863.71 775 751 189.2
D 15 0 84398 442.1 775 751 189.2
D 2 234 27685 142.35 775 751 189.2

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