ASTROSAT CZTI

Data Quality Report

Orbit 17468

Creation date: 2024-06-27T17:36:52.671995
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_067T01_9000002582_17468cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17468cztM0_level2_quad_clean.evt
Size (bytes)793,811,520126,328,320
Size757.0 MB 120.5 MB
Events in quadrant A5,987,251806,663
Events in quadrant B4,762,407831,158
Events in quadrant C4,546,602801,292
Events in quadrant D8,128,180754,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237632
B0198612
C0192702
D0302632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91184715.165606%
B91191031.129510%
C91191161.272069%
D9119100010.966115%

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 11358 9119 239 239 2.10% 2.62%
B 11359 9121 15 15 0.13% 0.16%
C 11359 9120 0 0 0.00% 0.00%
D 11359 9119 738 738 6.50% 8.09%

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 14 237 1293730 5695.22 1128 1107 227.0
A 15 174 349250 1533.9 1128 1107 227.0
A 0 226 10070 39.49 1128 1107 227.0
B 7 220 161053 749.37 1136 1107 213.4
B 0 230 41043 187.11 1136 1107 213.4
B 0 189 29484 132.95 1136 1107 213.4
C 14 238 171303 665.82 1102 1110 255.6
C 3 233 46702 178.36 1102 1110 255.6
C 5 218 24201 90.34 1102 1110 255.6
D 11 176 1203875 4587.98 1086 1056 262.2
D 10 70 1091588 4159.68 1086 1056 262.2
D 13 189 892077 3398.67 1086 1056 262.2

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