ASTROSAT CZTI

Data Quality Report

Orbit 50687

Creation date: 2025-02-10T12:03:59.478551
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_241T01_9000006446_50687cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50687cztM0_level2_quad_clean.evt
Size (bytes)701,326,08091,108,800
Size668.8 MB 86.9 MB
Events in quadrant A5,955,300616,287
Events in quadrant B5,369,733627,821
Events in quadrant C7,633,443528,387
Events in quadrant D6,484,632518,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240810
B0205784
C0273876
D0240311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66982013.000896%
B67006329.432836%
C6700109116.283582%
D670076911.477612%

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 6701 6700 151 151 2.25% 2.25%
B 6702 6701 569 569 8.49% 8.49%
C 6702 6702 844 844 12.59% 12.59%
D 6702 6702 798 798 11.91% 11.91%

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 80 1279396 7446.62 692 676 171.7
A 9 191 723151 4207.33 692 676 171.7
A 10 253 457599 2660.89 692 676 171.7
B 4 170 1288637 8787.09 681 656 146.6
B 1 223 415561 2830.64 681 656 146.6
B 0 229 243239 1654.99 681 656 146.6
C 15 174 2429803 13576.72 648 644 178.9
C 15 173 367750 2051.78 648 644 178.9
C 9 69 363978 2030.69 648 644 178.9
D 7 110 1143633 6285.59 652 627 181.8
D 8 129 835805 4592.79 652 627 181.8
D 15 108 347912 1909.78 652 627 181.8

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