ASTROSAT CZTI

Data Quality Report

Orbit 50188

Creation date: 2025-01-10T17:43:04.075086
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_003T01_9000006442_50188cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50188cztM0_level2_quad_clean.evt
Size (bytes)1,079,579,52066,360,960
Size1.0 GB 63.3 MB
Events in quadrant A8,093,803546,003
Events in quadrant B4,322,382665,401
Events in quadrant C13,867,80287,736
Events in quadrant D13,190,639267,661

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285134
B0171981
C0455441
D0435121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6330114818.135861%
B63302824.454976%
C6332549286.734049%
D6332371458.654454%

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 7506 6332 1040 1040 13.86% 16.42%
B 7506 6332 173 173 2.30% 2.73%
C 7507 6332 4416 4416 58.83% 69.74%
D 7507 6332 3608 3608 48.06% 56.98%

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 4 4 2024696 12528.66 641 626 161.6
A 0 98 970825 6005.37 641 626 161.6
A 6 250 893670 5527.8 641 626 161.6
B 4 206 738191 5241.86 664 640 140.7
B 3 249 310151 2199.73 664 640 140.7
B 5 172 123740 874.89 664 640 140.7
C 4 111 7481857 110491.4 240 239 67.7
C 15 213 2529279 37349.83 240 239 67.7
C 15 230 1726051 25487.45 240 239 67.7
D 8 192 2311806 15900.3 504 486 145.4
D 12 6 1896743 13044.95 504 486 145.4
D 15 185 1818551 12507.04 504 486 145.4

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