ASTROSAT CZTI

Data Quality Report

Orbit 50561

Creation date: 2025-02-02T00:46:45.842719
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/AS1T05_239T01_9000006444_50561cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50561cztM0_level2_quad_clean.evt
Size (bytes)543,856,32095,160,960
Size518.7 MB 90.8 MB
Events in quadrant A5,329,007601,187
Events in quadrant B4,992,586657,997
Events in quadrant C5,232,401581,156
Events in quadrant D4,055,404571,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204491
B0196281
C0200221
D0167192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67355047.483296%
B67354056.013363%
C67364536.725059%
D67351181.752042%

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 7650 6736 441 441 5.76% 6.55%
B 7650 6736 275 275 3.59% 4.08%
C 7651 6737 390 390 5.10% 5.79%
D 7650 6735 114 114 1.49% 1.69%

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 8 247 501406 2916.17 694 679 171.7
A 4 207 389111 2262.18 694 679 171.7
A 3 130 385214 2239.48 694 679 171.7
B 0 229 657742 4420.25 693 668 148.7
B 7 0 337817 2268.06 693 668 148.7
B 4 206 232335 1558.46 693 668 148.7
C 15 178 658972 3508.68 679 675 187.6
C 13 3 408167 2171.9 679 675 187.6
C 15 196 291677 1551.02 679 675 187.6
D 2 249 370055 1920.51 691 666 192.3
D 6 42 203232 1053.17 691 666 192.3
D 11 161 178730 925.78 691 666 192.3

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