ASTROSAT CZTI

Data Quality Report

Orbit 27183

Creation date: 2024-06-27T19:37:27.684257
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/AS1T03_243T01_9000003918_27183cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27183cztM0_level2_quad_clean.evt
Size (bytes)1,375,738,560260,023,680
Size1.3 GB 248.0 MB
Events in quadrant A8,848,0901,790,102
Events in quadrant B8,339,0941,802,594
Events in quadrant C8,187,2851,683,898
Events in quadrant D15,232,1631,516,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363450
B0346480
C0342420
D0561260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156763822.436846%
B156762591.652207%
C156773442.194297%
D15677216813.829177%

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 19386 15679 111 111 0.57% 0.71%
B 19386 15679 7 7 0.04% 0.04%
C 19387 15680 20 20 0.10% 0.13%
D 19387 15680 1782 1782 9.19% 11.36%

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 6 16 506815 1203.45 2115 2079 419.4
A 13 248 123138 288.64 2115 2079 419.4
A 0 13 37936 85.49 2115 2079 419.4
B 0 190 78505 197.46 2088 2044 387.2
B 12 111 45466 112.14 2088 2044 387.2
B 11 111 40800 100.09 2088 2044 387.2
C 14 238 322746 700.9 1981 1996 457.6
C 15 208 64486 136.55 1981 1996 457.6
C 2 16 46981 98.3 1981 1996 457.6
D 1 52 3464204 7581.63 1903 1860 456.7
D 12 1 3220482 7047.94 1903 1860 456.7
D 7 38 806803 1762.61 1903 1860 456.7

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