ASTROSAT CZTI

Data Quality Report

Orbit 49800

Creation date: 2024-12-12T18:23:58.491485
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_037T01_9000006440_49800cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49800cztM0_level2_quad_clean.evt
Size (bytes)1,157,964,48055,103,040
Size1.1 GB 52.6 MB
Events in quadrant A11,511,118389,439
Events in quadrant B4,904,961711,824
Events in quadrant C8,345,04136,745
Events in quadrant D17,544,36529,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391270
B0195427
C0299130
D0569870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7195320644.558721%
B71944295.963303%
C7194686095.357242%
D7194693996.455379%

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 7194 7194 2875 2875 39.96% 39.96%
B 7193 7193 233 233 3.24% 3.24%
C 7193 7193 1307 1307 18.17% 18.17%
D 7193 7193 6517 6517 90.60% 90.60%

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 0 98 4954363 31276.72 617 601 158.4
A 15 63 944400 5958.89 617 601 158.4
A 3 1 306504 1931.39 617 601 158.4
B 10 44 389054 2371.33 771 748 163.8
B 10 28 295426 1799.56 771 748 163.8
B 12 18 291597 1776.17 771 748 163.8
C 15 147 3300010 89671.9 105 104 36.8
C 15 230 981021 26655.51 105 104 36.8
C 15 197 737541 20039.17 105 104 36.8
D 7 61 4060945 32525.22 347 330 124.8
D 15 168 3500568 28036.64 347 330 124.8
D 8 176 1526527 12224.72 347 330 124.8

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