ASTROSAT CZTI

Data Quality Report

Orbit 20240817_A13_024T01_9000006394_level2

Creation date: 2024-08-21T14:22:07.177686
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_024T01_9000006394cztM0_level2.fits modeM0/AS1A13_024T01_9000006394cztM0_level2_quad_clean.evt
Size (bytes)391,308,480399,441,600
Size373.2 MB 380.9 MB
Events in quadrant A2,288,5702,426,737
Events in quadrant B2,015,0442,117,483
Events in quadrant C2,401,4282,363,488
Events in quadrant D2,020,7752,070,695

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09330
B09280
C09240
D09220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01711140
B0904550
C0974360
D01188350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4518428826.378364%
B45562688215.104693%
C455048771.927303%
D4544527336.013863%

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 69916 45590 0 0 0.00% 0.00%
B 69913 42339 0 0 0.00% 0.00%
C 69916 45871 0 0 0.00% 0.00%
D 69916 45822 0 0 0.00% 0.00%

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 7 110 1876 8.59 596 555 153.8
A 15 236 1837 8.34 596 555 153.8
A 14 95 1761 7.84 596 555 153.8
B 2 9 1968 13.42 531 502 109.2
B 2 8 1526 9.37 531 502 109.2
B 3 17 1478 8.94 531 502 109.2
C 1 81 1781 7.17 635 589 166.2
C 1 80 1765 7.07 635 589 166.2
C 3 202 1758 7.03 635 589 166.2
D 15 47 1540 6.35 578 523 160.2
D 10 189 1483 5.99 578 523 160.2
D 7 3 1470 5.91 578 523 160.2

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