ASTROSAT CZTI

Data Quality Report

Orbit 20230130_A12_011T22_9000005492_level2

Creation date: 2023-02-01T11:03:37.700585
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_011T22_9000005492cztM0_level2.fits modeM0/AS1A12_011T22_9000005492cztM0_level2_quad_clean.evt
Size (bytes)344,882,880354,798,720
Size328.9 MB 338.4 MB
Events in quadrant A1,895,3941,879,966
Events in quadrant B2,002,9142,161,284
Events in quadrant C2,012,4442,039,513
Events in quadrant D1,794,8021,929,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920300
B0950740
C01231530
D0983220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08120
B08120
C08120
D08120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39805871721.899259%
B3980515083.788469%
C3980518854.735586%
D3980512683.185529%

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 51802 39619 0 0 0.00% 0.00%
B 51802 39632 0 0 0.00% 0.00%
C 51802 39783 0 0 0.00% 0.00%
D 51802 39800 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 9 19 1598 8.98 494 463 126.4
A 7 110 1542 8.54 494 463 126.4
A 0 29 1534 8.48 494 463 126.4
B 2 9 1732 11.69 529 503 105.1
B 3 80 1476 9.25 529 503 105.1
B 5 128 1444 8.95 529 503 105.1
C 1 81 1676 8.49 533 497 138.8
C 1 80 1608 8.0 533 497 138.8
C 1 65 1443 6.81 533 497 138.8
D 3 14 1331 6.21 513 467 139.1
D 7 3 1308 6.05 513 467 139.1
D 4 160 1290 5.92 513 467 139.1

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