ASTROSAT CZTI

Data Quality Report

Orbit 48142

Creation date: 2024-08-23T11:57:01.140051
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_009T01_9000006406_48142cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48142cztM0_level2_quad_clean.evt
Size (bytes)489,697,92089,784,000
Size467.0 MB 85.6 MB
Events in quadrant A7,702,289785,201
Events in quadrant B1,154,079160
Events in quadrant C3,400,124792,360
Events in quadrant D5,354,291683,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274323
B070982
C0143132
D0203062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65574456.786640%
B6557655699.984749%
C65571261.921610%
D65575668.631996%

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 7737 6558 100 100 1.29% 1.52%
B 7737 6535 1 1 0.01% 0.02%
C 7737 6558 49 49 0.63% 0.75%
D 7737 6558 447 447 5.78% 6.82%

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 4520885 26894.76 805 790 168.1
A 10 248 27372 158.16 805 790 168.1
A 3 14 20429 116.85 805 790 168.1
B 2 177 904988 76516.73 47 46 11.8
B 4 21 30759 2596.92 47 46 11.8
B 0 200 13134 1106.65 47 46 11.8
C 12 2 237542 1253.77 799 806 188.8
C 12 249 22918 117.11 799 806 188.8
C 11 16 16559 83.43 799 806 188.8
D 12 2 1329542 6775.82 781 759 196.1
D 2 37 434483 2211.67 781 759 196.1
D 2 165 173568 881.2 781 759 196.1

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