ASTROSAT CZTI

Data Quality Report

Orbit 09157

Creation date: 2024-06-27T15:42:04.235582
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/AS1C02_042T01_9000001278_09157cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09157cztM0_level2_quad_clean.evt
Size (bytes)435,663,36095,947,200
Size415.5 MB 91.5 MB
Events in quadrant A3,545,566612,216
Events in quadrant B3,042,582620,528
Events in quadrant C2,879,526624,290
Events in quadrant D3,287,992598,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148323
B0135392
C0131562
D0143132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454460.712736%
B6454290.449334%
C6454240.371862%
D6454560.867679%

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 7479 6454 15 15 0.20% 0.23%
B 7479 6454 1 1 0.01% 0.02%
C 7479 6454 0 0 0.00% 0.00%
D 7479 6454 21 21 0.28% 0.33%

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 8 5 590972 3921.57 738 721 150.5
A 1 162 56257 368.98 738 721 150.5
A 5 16 11227 69.8 738 721 150.5
B 8 234 45439 315.33 747 730 141.8
B 0 219 31957 220.24 747 730 141.8
B 0 229 24630 168.57 747 730 141.8
C 9 68 7725 41.18 733 738 169.7
C 8 208 6845 36.0 733 738 169.7
C 13 61 5716 29.34 733 738 169.7
D 1 52 153709 792.74 721 706 193.0
D 2 14 94180 484.31 721 706 193.0
D 13 104 93723 481.94 721 706 193.0

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