ASTROSAT CZTI

Data Quality Report

Orbit 50192

Creation date: 2025-01-10T18:41:18.055228
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_50192cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50192cztM0_level2_quad_clean.evt
Size (bytes)1,299,790,08075,386,880
Size1.2 GB 71.9 MB
Events in quadrant A9,463,288579,736
Events in quadrant B7,206,544671,366
Events in quadrant C15,844,493157,007
Events in quadrant D15,007,127338,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334460
B0266640
C0523420
D0499042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7695173722.573099%
B7695119315.503574%
C7696612879.625780%
D7695401552.176738%

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 7695 7695 1419 1419 18.44% 18.44%
B 7695 7695 860 860 11.18% 11.18%
C 7696 7696 4704 4704 61.12% 61.12%
D 7694 7694 3715 3715 48.28% 48.28%

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 2478932 13499.56 740 721 183.6
A 8 8 766682 4172.42 740 721 183.6
A 3 130 606799 3301.49 740 721 183.6
B 4 206 2410476 15349.28 745 721 157.0
B 3 249 775313 4933.88 745 721 157.0
B 5 185 244529 1552.97 745 721 157.0
C 4 111 8598789 87277.36 336 335 98.5
C 15 213 2628885 26680.72 336 335 98.5
C 15 197 1004891 10196.6 336 335 98.5
D 15 168 2897546 16187.48 617 594 179.0
D 15 108 1803258 10072.86 617 594 179.0
D 15 106 1152345 6435.71 617 594 179.0

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