ASTROSAT CZTI

Data Quality Report

Orbit 51862

Creation date: 2025-04-30T15:50:06.016393
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/AS1C09_011T05_9000006466_51862cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51862cztM0_level2_quad_clean.evt
Size (bytes)752,947,20099,737,280
Size718.1 MB 95.1 MB
Events in quadrant A5,911,491692,724
Events in quadrant B5,290,982729,154
Events in quadrant C4,597,340669,535
Events in quadrant D11,481,578398,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02293053
B02108619
C01913819
D039503155

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76211922.519354%
B76254255.573770%
C76252282.990164%
D7613304940.049915%

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 7633 7630 138 138 1.81% 1.81%
B 7633 7631 310 310 4.06% 4.06%
C 7634 7634 217 217 2.84% 2.84%
D 7625 7616 2882 2882 37.80% 37.84%

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 3 1095955 5522.03 792 771 198.3
A 4 175 335628 1688.38 792 771 198.3
A 11 3 331467 1667.4 792 771 198.3
B 10 44 1337995 8050.91 782 755 166.1
B 0 171 160493 961.71 782 755 166.1
B 0 213 115930 693.42 782 755 166.1
C 0 193 356468 1708.06 760 752 208.3
C 13 3 344103 1648.68 760 752 208.3
C 15 230 181100 865.98 760 752 208.3
D 11 129 6779498 42004.15 575 554 161.4
D 8 176 1164975 7215.06 575 554 161.4
D 6 42 530094 3281.17 575 554 161.4

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