ASTROSAT CZTI

Data Quality Report

Orbit 12586

Creation date: 2024-06-27T16:29:37.638876
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/AS1G08_071T01_9000001874_12586cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12586cztM0_level2_quad_clean.evt
Size (bytes)1,156,780,800158,549,760
Size1.1 GB 151.2 MB
Events in quadrant A6,429,650977,715
Events in quadrant B9,526,819975,478
Events in quadrant C6,299,479984,341
Events in quadrant D11,839,662905,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283844
B0372923
C0283623
D0445003

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138672982.148987%
B138679506.850797%
C138672451.766784%
D13867169712.237687%

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 15428 13868 0 0 0.00% 0.00%
B 15428 13868 483 483 3.13% 3.48%
C 15428 13868 5 5 0.03% 0.04%
D 15428 13868 1312 1312 8.50% 9.46%

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 12 189 65297 188.34 1652 1610 338.1
A 12 96 16258 43.32 1652 1610 338.1
A 0 226 14678 38.65 1652 1610 338.1
B 3 64 1832815 5887.08 1627 1583 311.1
B 4 239 912281 2927.73 1627 1583 311.1
B 11 51 222601 710.53 1627 1583 311.1
C 14 234 21830 54.3 1604 1609 372.4
C 15 208 20628 51.08 1604 1609 372.4
C 13 61 11826 27.44 1604 1609 372.4
D 1 52 4436118 12049.09 1521 1473 368.0
D 10 157 1304275 3539.76 1521 1473 368.0
D 10 199 124767 334.99 1521 1473 368.0

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