ASTROSAT CZTI

Data Quality Report

Orbit 51514

Creation date: 2025-04-07T05:21:43.398583
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_090T01_9000006458_51514cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51514cztM0_level2_quad_clean.evt
Size (bytes)916,188,48099,273,600
Size873.7 MB 94.7 MB
Events in quadrant A9,225,530589,533
Events in quadrant B4,578,330807,944
Events in quadrant C6,879,068667,866
Events in quadrant D12,611,289383,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329181
B0189741
C0259151
D0431171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8011201125.102983%
B80121451.809785%
C80127619.498253%
D8012361445.107339%

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 8011 8011 1155 1155 14.42% 14.42%
B 8012 8012 66 66 0.82% 0.82%
C 8012 8012 676 676 8.44% 8.44%
D 8012 8012 3263 3263 40.73% 40.73%

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 12 250 2876642 14854.78 785 763 193.6
A 15 174 2400474 12395.23 785 763 193.6
A 15 250 229506 1181.53 785 763 193.6
B 15 52 267171 1446.57 861 831 184.1
B 5 185 238855 1292.77 861 831 184.1
B 10 254 98263 529.18 861 831 184.1
C 15 1 1789959 7991.57 805 796 223.9
C 15 205 1066592 4760.54 805 796 223.9
C 12 252 201250 895.36 805 796 223.9
D 8 176 7749674 45602.84 605 584 169.9
D 11 176 937081 5511.22 605 584 169.9
D 1 3 649509 3818.88 605 584 169.9

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