ASTROSAT CZTI

Data Quality Report

Orbit 50149

Creation date: 2025-01-05T11:01:49.344805
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_50149cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50149cztM0_level2_quad_clean.evt
Size (bytes)1,462,979,52074,208,960
Size1.4 GB 70.8 MB
Events in quadrant A12,783,287513,130
Events in quadrant B4,916,408794,499
Events in quadrant C15,923,085267,354
Events in quadrant D19,909,005108,076

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436330
B0201970
C0528030
D0647120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8103295736.492657%
B81031902.344811%
C8104537266.288253%
D8104708287.388944%

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 8102 8102 2641 2641 32.60% 32.60%
B 8103 8103 135 135 1.67% 1.67%
C 8104 8104 4504 4504 55.58% 55.58%
D 8103 8103 6729 6729 83.04% 83.04%

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 0 98 5069802 27123.65 736 715 186.9
A 8 8 1868197 9992.52 736 715 186.9
A 12 250 659709 3526.14 736 715 186.9
B 4 206 265575 1523.32 825 798 173.8
B 3 249 189300 1084.49 825 798 173.8
B 1 255 172176 985.97 825 798 173.8
C 4 111 3600345 25929.4 493 490 138.8
C 15 197 2095177 15087.82 493 490 138.8
C 15 147 1840903 13256.31 493 490 138.8
D 15 168 6645622 45966.66 467 448 144.6
D 15 142 1715411 11862.91 467 448 144.6
D 15 185 1582967 10946.76 467 448 144.6

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