ASTROSAT CZTI

Data Quality Report

Orbit 31631

Creation date: 2024-06-27T20:30:54.134479
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_123T01_9000004620_31631cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31631cztM0_level2_quad_clean.evt
Size (bytes)725,973,12070,568,640
Size692.3 MB 67.3 MB
Events in quadrant A3,413,404435,888
Events in quadrant B6,251,834418,957
Events in quadrant C4,823,298412,816
Events in quadrant D7,024,513380,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145201
B0235301
C0189351
D0258851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70061381.969740%
B70075027.164264%
C70074165.936920%
D70075798.263165%

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 7641 7007 1 1 0.01% 0.01%
B 7642 7008 205 205 2.68% 2.93%
C 7642 7008 133 133 1.74% 1.90%
D 7642 7008 435 435 5.69% 6.21%

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 14 218 16533 88.84 875 856 176.5
A 13 254 13068 69.21 875 856 176.5
A 15 174 10647 55.49 875 856 176.5
B 6 159 1966314 11950.19 855 833 164.5
B 10 245 540800 3283.02 855 833 164.5
B 5 172 197577 1196.21 855 833 164.5
C 3 233 1271104 6498.49 826 829 195.5
C 14 238 146074 743.05 826 829 195.5
C 0 10 63701 321.64 826 829 195.5
D 8 195 2347439 11756.16 821 799 199.6
D 11 176 720011 3603.1 821 799 199.6
D 12 218 305299 1525.48 821 799 199.6

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