ASTROSAT CZTI

Data Quality Report

Orbit 48362

Creation date: 2024-09-07T11:20:15.914877
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/AS1A13_029T01_9000006426_48362cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48362cztM0_level2_quad_clean.evt
Size (bytes)487,981,440112,567,680
Size465.4 MB 107.4 MB
Events in quadrant A7,704,120721,854
Events in quadrant B3,432,733771,333
Events in quadrant C3,168,426744,270
Events in quadrant D3,215,554683,618

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280442
B0148892
C0145742
D0146713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69905287.553648%
B69902062.947067%
C6990971.387697%
D69891231.759908%

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 7830 6990 96 96 1.23% 1.37%
B 7830 6990 13 13 0.17% 0.19%
C 7830 6990 3 3 0.04% 0.04%
D 7829 6989 8 8 0.10% 0.11%

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 10 83 4347234 26076.9 794 775 166.7
A 13 248 276007 1651.27 794 775 166.7
A 13 254 14116 80.04 794 775 166.7
B 8 234 51633 316.58 803 777 160.6
B 5 172 50157 307.39 803 777 160.6
B 4 21 39338 240.04 803 777 160.6
C 1 16 31602 163.91 794 799 187.9
C 12 2 19875 101.51 794 799 187.9
C 1 3 8615 41.59 794 799 187.9
D 2 249 40595 196.65 801 778 202.5
D 2 234 33387 161.05 801 778 202.5
D 2 233 32658 157.45 801 778 202.5

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