ASTROSAT CZTI

Data Quality Report

Orbit 25362

Creation date: 2024-06-27T19:16:48.696245
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/AS1A09_061T02_9000003708_25362cztM0_level2.evt modeM0/AS1A09_061T02_9000003708_25362cztM0_level2_quad_clean.evt
Size (bytes)534,343,680118,992,960
Size509.6 MB 113.5 MB
Events in quadrant A3,968,228823,240
Events in quadrant B2,904,771832,689
Events in quadrant C3,164,026781,876
Events in quadrant D5,749,842757,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156150
B0121040
C0131240
D0211280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5845811.385800%
B5846450.769757%
C5846841.436880%
D58453295.628743%

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 6895 5846 13 13 0.19% 0.22%
B 6896 5847 0 0 0.00% 0.00%
C 6896 5847 12 12 0.17% 0.21%
D 6895 5846 385 385 5.58% 6.59%

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 1108340 7637.12 727 714 145.0
A 15 173 34199 230.88 727 714 145.0
A 3 1 22937 153.23 727 714 145.0
B 0 229 54502 398.34 720 704 135.1
B 12 111 15665 110.78 720 704 135.1
B 11 111 14407 101.46 720 704 135.1
C 7 87 315244 1983.97 684 688 158.5
C 14 238 113090 708.94 684 688 158.5
C 3 233 47478 295.11 684 688 158.5
D 1 52 2182242 13215.68 689 668 165.1
D 8 195 874645 5294.43 689 668 165.1
D 12 233 32573 193.28 689 668 165.1

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