ASTROSAT CZTI

Data Quality Report

Orbit 40657

Creation date: 2024-06-27T22:18:47.128270
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/AS1A12_029T01_9000005556_40657cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40657cztM0_level2_quad_clean.evt
Size (bytes)954,967,680255,139,200
Size910.7 MB 243.3 MB
Events in quadrant A8,088,6511,736,520
Events in quadrant B9,144,5021,762,596
Events in quadrant C7,576,7341,702,593
Events in quadrant D9,292,4921,413,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340695
B0380294
C0326794
D0389274

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16078240.149272%
B160783141.952979%
C16078210.130613%
D16078178711.114566%

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 21477 16082 6 6 0.03% 0.04%
B 21477 16082 196 196 0.91% 1.22%
C 21477 16082 13 13 0.06% 0.08%
D 21477 16082 408 408 1.90% 2.54%

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 1230539 3414.71 1762 1729 359.9
A 15 191 36365 96.25 1762 1729 359.9
A 3 137 20264 51.51 1762 1729 359.9
B 0 229 1133201 3341.57 1742 1690 338.6
B 0 190 670133 1974.04 1742 1690 338.6
B 5 255 242455 711.02 1742 1690 338.6
C 15 214 696993 1732.89 1728 1741 401.2
C 12 249 54760 132.15 1728 1741 401.2
C 0 10 41943 100.2 1728 1741 401.2
D 12 227 1363868 3383.77 1623 1576 402.6
D 2 250 625528 1549.82 1623 1576 402.6
D 12 191 458984 1136.15 1623 1576 402.6

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