ASTROSAT CZTI

Data Quality Report

Orbit 23205

Creation date: 2024-06-27T18:51:15.670470
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_175T01_9000003428_23205cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23205cztM0_level2_quad_clean.evt
Size (bytes)504,204,48086,495,040
Size480.8 MB 82.5 MB
Events in quadrant A3,279,575548,295
Events in quadrant B3,355,695558,379
Events in quadrant C4,561,022543,762
Events in quadrant D3,650,380533,770

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137122
B0138962
C0176172
D0151272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62341091.748476%
B62341372.197626%
C623477012.351620%
D62341552.486365%

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 7489 6235 0 0 0.00% 0.00%
B 7489 6234 1 1 0.01% 0.02%
C 7489 6234 434 434 5.80% 6.96%
D 7489 6234 42 42 0.56% 0.67%

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 13 254 9749 52.68 850 833 169.2
A 0 226 7204 37.64 850 833 169.2
A 3 137 7054 36.75 850 833 169.2
B 12 111 18716 111.8 850 831 160.0
B 11 111 16557 98.3 850 831 160.0
B 14 111 14443 85.09 850 831 160.0
C 9 15 1055537 5763.79 794 801 183.0
C 0 10 190968 1039.2 794 801 183.0
C 14 238 125639 682.2 794 801 183.0
D 1 52 193181 950.29 841 820 202.4
D 12 233 106994 524.51 841 820 202.4
D 13 153 84231 412.06 841 820 202.4

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