ASTROSAT CZTI

Data Quality Report

Orbit 15143

Creation date: 2024-06-27T17:04:17.906662
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/AS1A04_218T03_9000002232_15143cztM0_level2.evt modeM0/AS1A04_218T03_9000002232_15143cztM0_level2_quad_clean.evt
Size (bytes)810,397,440145,264,320
Size772.9 MB 138.5 MB
Events in quadrant A6,022,750900,895
Events in quadrant B6,029,564922,239
Events in quadrant C5,988,254907,622
Events in quadrant D5,714,753863,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251213
B0253082
C0247722
D0249362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116251691.453763%
B116252622.253763%
C116251191.023656%
D116252301.978495%

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 13181 11627 1 1 0.01% 0.01%
B 13181 11628 61 61 0.46% 0.52%
C 13181 11628 0 0 0.00% 0.00%
D 13181 11628 85 85 0.64% 0.73%

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 15 239 242920 841.75 1424 1392 286.9
A 12 189 220987 765.31 1424 1392 286.9
A 1 162 38344 128.78 1424 1392 286.9
B 3 64 390967 1454.05 1415 1381 267.9
B 12 111 31969 114.16 1415 1381 267.9
B 11 111 27673 98.13 1415 1381 267.9
C 3 233 570436 1773.48 1387 1397 320.9
C 7 247 12691 35.2 1387 1397 320.9
C 13 61 9812 26.23 1387 1397 320.9
D 10 70 239207 687.87 1397 1354 345.8
D 5 222 51409 144.76 1397 1354 345.8
D 2 33 45030 126.31 1397 1354 345.8

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