ASTROSAT CZTI

Data Quality Report

Orbit 20221223_A12_044T16_9000005442_level2

Creation date: 2022-12-29T10:23:20.037277
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_044T16_9000005442cztM0_level2.fits modeM0/AS1A12_044T16_9000005442cztM0_level2_quad_clean.evt
Size (bytes)348,422,400344,347,200
Size332.3 MB 328.4 MB
Events in quadrant A2,155,0962,121,176
Events in quadrant B2,076,9162,102,606
Events in quadrant C2,047,8121,927,156
Events in quadrant D1,729,9741,736,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0804630
B0753470
C0967510
D01472180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07540
B07540
C07540
D07540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A369911140.308183%
B369911090.294666%
C3699116784.536239%
D36991439311.875862%

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 51033 36990 0 0 0.00% 0.00%
B 51033 36992 0 0 0.00% 0.00%
C 51033 36991 0 0 0.00% 0.00%
D 51033 36990 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 1817 9.13 563 530 140.9
A 7 110 1715 8.41 563 530 140.9
A 0 29 1692 8.25 563 530 140.9
B 2 9 1679 10.55 548 523 109.6
B 3 80 1646 10.25 548 523 109.6
B 3 17 1417 8.16 548 523 109.6
C 1 81 1670 8.33 542 509 139.4
C 1 80 1620 7.97 542 509 139.4
C 3 202 1616 7.94 542 509 139.4
D 3 14 1294 6.35 494 451 132.8
D 7 3 1245 5.98 494 451 132.8
D 10 189 1234 5.9 494 451 132.8

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