ASTROSAT CZTI

Data Quality Report

Orbit 45918

Creation date: 2024-06-27T23:17:41.592987
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/AS1A13_071T03_9000006142_45918cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45918cztM0_level2_quad_clean.evt
Size (bytes)1,424,770,560162,515,520
Size1.3 GB 155.0 MB
Events in quadrant A10,507,5961,221,785
Events in quadrant B22,864,145589,951
Events in quadrant C6,018,6651,217,946
Events in quadrant D12,427,6431,062,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392622
B0762162
C0267372
D0451612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119633723.109588%
B11962729060.942986%
C119632321.939313%
D1196310638.885731%

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 13333 11963 25 25 0.19% 0.21%
B 13331 11961 5668 5668 42.52% 47.39%
C 13333 11964 129 129 0.97% 1.08%
D 13333 11964 891 891 6.68% 7.45%

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 10 83 5284597 19483.29 1302 1271 271.2
A 0 247 54497 196.28 1302 1271 271.2
A 2 79 34650 123.09 1302 1271 271.2
B 3 112 16509778 82245.41 1025 993 200.7
B 10 246 2055722 10236.49 1025 993 200.7
B 4 158 90707 446.95 1025 993 200.7
C 14 254 812051 2681.21 1283 1291 302.4
C 4 254 115215 376.75 1283 1291 302.4
C 12 249 50021 161.15 1283 1291 302.4
D 11 241 3387914 10558.03 1255 1216 320.8
D 1 52 2988614 9313.21 1255 1216 320.8
D 13 249 394227 1225.21 1255 1216 320.8

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