ASTROSAT CZTI

Data Quality Report

Orbit 00161

Creation date: 2024-06-27T13:57:13.307580
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/AS1P01_120T01_9000000006_00161cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00161cztM0_level2_quad_clean.evt
Size (bytes)830,191,68070,920,000
Size791.7 MB 67.6 MB
Events in quadrant A6,238,652442,133
Events in quadrant B6,651,269450,294
Events in quadrant C5,959,489445,311
Events in quadrant D5,933,441432,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223832
B0236211
C0215741
D0215131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541120.036962%
B5411280.517464%
C5411140.258732%
D5411420.776197%

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 7032 5413 104 104 1.48% 1.92%
B 7032 5413 270 270 3.84% 4.99%
C 7032 5413 66 66 0.94% 1.22%
D 7032 5413 156 156 2.22% 2.88%

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 10 36287 100.13 1573 1562 346.8
A 15 106 35188 96.96 1573 1562 346.8
A 13 17 31805 87.21 1573 1562 346.8
B 10 199 260344 696.86 1607 1621 371.3
B 7 235 146145 389.27 1607 1621 371.3
B 5 216 66925 175.89 1607 1621 371.3
C 12 48 58809 139.87 1464 1522 409.6
C 1 1 34891 81.47 1464 1522 409.6
C 9 128 26368 60.66 1464 1522 409.6
D 10 202 274256 634.74 1422 1471 429.8
D 14 53 67722 154.16 1422 1471 429.8
D 2 106 31982 71.0 1422 1471 429.8

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