ASTROSAT CZTI

Data Quality Report

Orbit 45954

Creation date: 2024-06-27T23:18:07.786602
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/AS1A13_071T06_9000006146_45954cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45954cztM0_level2_quad_clean.evt
Size (bytes)540,717,120101,206,080
Size515.7 MB 96.5 MB
Events in quadrant A5,510,491678,656
Events in quadrant B7,332,179632,495
Events in quadrant C2,955,506690,873
Events in quadrant D3,730,701624,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204321
B0263271
C0133131
D0155852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62821973.135944%
B6283103316.441191%
C6283681.082286%
D62821041.655524%

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 7322 6282 4 4 0.05% 0.06%
B 7323 6283 659 659 9.00% 10.49%
C 7323 6284 22 22 0.30% 0.35%
D 7322 6282 32 32 0.44% 0.51%

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 2720167 18403.25 711 695 147.8
A 7 3 15930 103.1 711 695 147.8
A 0 247 13037 83.52 711 695 147.8
B 3 112 4491366 33401.15 682 662 134.4
B 4 158 47554 348.78 682 662 134.4
B 0 186 45991 337.15 682 662 134.4
C 5 250 69197 415.26 704 708 164.9
C 12 249 56890 340.64 704 708 164.9
C 0 207 23987 141.15 704 708 164.9
D 11 241 721030 4118.21 695 671 174.9
D 5 171 91151 517.26 695 671 174.9
D 13 249 69213 391.85 695 671 174.9

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