ASTROSAT CZTI

Data Quality Report

Orbit 45776

Creation date: 2024-06-27T23:16:02.831100
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/AS1T05_183T01_9000006124_45776cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45776cztM0_level2_quad_clean.evt
Size (bytes)639,267,840106,773,120
Size609.7 MB 101.8 MB
Events in quadrant A6,287,280716,343
Events in quadrant B8,205,089667,673
Events in quadrant C3,707,141724,825
Events in quadrant D4,948,953659,487

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230222
B0291362
C0155552
D0191982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66573495.242602%
B6657128119.242902%
C66572724.085925%
D66572994.491513%

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 7702 6658 86 86 1.12% 1.29%
B 7702 6658 750 750 9.74% 11.26%
C 7702 6658 157 157 2.04% 2.36%
D 7702 6658 164 164 2.13% 2.46%

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 10 83 2953712 18225.03 777 761 162.0
A 13 248 292279 1799.19 777 761 162.0
A 7 191 28273 169.8 777 761 162.0
B 3 112 4017100 27165.57 745 721 147.8
B 15 201 680223 4595.95 745 721 147.8
B 0 171 181878 1225.29 745 721 147.8
C 14 254 665168 3656.51 769 774 181.7
C 1 3 23916 127.36 769 774 181.7
C 3 233 10788 55.11 769 774 181.7
D 1 52 1059357 5529.28 763 741 191.5
D 13 249 306610 1597.59 763 741 191.5
D 2 249 189273 984.72 763 741 191.5

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