ASTROSAT CZTI

Data Quality Report

Orbit 50130

Creation date: 2025-01-08T15:59:57.203795
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/AS1C09_003T01_9000006442_50130cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50130cztM0_level2_quad_clean.evt
Size (bytes)1,096,090,56052,957,440
Size1.0 GB 50.5 MB
Events in quadrant A13,823,422114,230
Events in quadrant B3,331,475631,023
Events in quadrant C12,067,504137,915
Events in quadrant D10,893,075304,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451021
B0139521
C0399227
D0364951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5944504884.925976%
B5945991.665265%
C5944467178.583445%
D5944278946.921265%

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 7104 5945 4535 4535 63.84% 76.28%
B 7105 5946 46 46 0.65% 0.77%
C 7103 5944 3133 3133 44.11% 52.71%
D 7104 5945 2590 2590 36.46% 43.57%

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 6 250 6796270 70317.12 383 374 96.6
A 4 13 1851324 19151.77 383 374 96.6
A 8 8 1563517 16173.84 383 374 96.6
B 5 185 125604 959.35 620 600 130.3
B 0 216 125424 957.97 620 600 130.3
B 0 200 103160 787.1 620 600 130.3
C 4 111 6605912 80938.58 284 282 81.6
C 15 230 1254057 15362.47 284 282 81.6
C 15 213 727860 8914.99 284 282 81.6
D 15 106 2196173 15143.73 497 479 145.0
D 15 139 1230241 8481.68 497 479 145.0
D 12 6 964221 6646.94 497 479 145.0

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