ASTROSAT CZTI

Data Quality Report

Orbit 53283

Creation date: 2025-08-04T14:01:38.656470
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/AS1C09_011T08_9000006492_53283cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53283cztM0_level2_quad_clean.evt
Size (bytes)745,755,84085,150,080
Size711.2 MB 81.2 MB
Events in quadrant A4,460,069599,967
Events in quadrant B5,120,501660,262
Events in quadrant C12,794,403307,824
Events in quadrant D4,723,755553,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181292
B0200132
C0423892
D0187623

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65414156.344596%
B65413996.099985%
C6541369356.459257%
D65403755.733945%

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 7651 6542 387 387 5.06% 5.92%
B 7651 6541 241 241 3.15% 3.68%
C 7651 6541 3553 3553 46.44% 54.32%
D 7650 6541 344 344 4.50% 5.26%

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 12 115 1434690 8616.89 660 645 166.4
A 15 174 66389 395.04 660 645 166.4
A 4 159 64687 384.82 660 645 166.4
B 10 28 547130 3856.76 666 644 141.7
B 14 167 452382 3188.09 666 644 141.7
B 2 249 425575 2998.9 666 644 141.7
C 1 241 4817205 35516.71 491 487 135.6
C 10 22 2369265 17466.5 491 487 135.6
C 15 224 1507774 11114.18 491 487 135.6
D 6 239 738238 4042.45 640 611 182.5
D 3 12 572955 3136.65 640 611 182.5
D 11 176 246430 1347.17 640 611 182.5

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