ASTROSAT CZTI

Data Quality Report

Orbit 46508

Creation date: 2024-06-27T23:24:02.447167
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_068T07_9000006222_46508cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46508cztM0_level2_quad_clean.evt
Size (bytes)600,632,640115,819,200
Size572.8 MB 110.5 MB
Events in quadrant A7,012,822788,068
Events in quadrant B4,540,083806,889
Events in quadrant C3,509,711781,293
Events in quadrant D6,595,259613,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258652
B0185170
C0159010
D0246820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74261782.396984%
B74271772.383196%
C7427290.390467%
D7427115615.564831%

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 7426 7426 100 100 1.35% 1.35%
B 7427 7427 123 123 1.66% 1.66%
C 7427 7427 20 20 0.27% 0.27%
D 7427 7427 1120 1120 15.08% 15.08%

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 3435318 19670.52 830 811 174.6
A 0 247 159281 907.61 830 811 174.6
A 13 248 45412 255.44 830 811 174.6
B 5 172 258553 1583.95 824 800 162.7
B 3 112 227109 1390.72 824 800 162.7
B 15 201 165334 1011.1 824 800 162.7
C 14 254 142910 735.62 817 822 193.2
C 9 54 112662 579.02 817 822 193.2
C 12 2 51113 260.37 817 822 193.2
D 2 37 2570807 13939.96 730 707 184.4
D 13 249 421840 2284.18 730 707 184.4
D 1 52 221140 1195.61 730 707 184.4

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