ASTROSAT CZTI

Data Quality Report

Orbit 48254

Creation date: 2024-09-05T19:31:19.109992
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_029T01_9000006422_48254cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48254cztM0_level2_quad_clean.evt
Size (bytes)962,352,000213,857,280
Size917.8 MB 204.0 MB
Events in quadrant A14,042,3331,376,244
Events in quadrant B6,964,9761,470,721
Events in quadrant C6,243,2741,412,454
Events in quadrant D7,326,3831,280,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0518783
B0298193
C0283843
D0312183

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135314963.665657%
B135322361.744014%
C135311581.167689%
D135312902.143227%

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 15981 13531 64 64 0.40% 0.47%
B 15982 13532 58 58 0.36% 0.43%
C 15981 13531 61 61 0.38% 0.45%
D 15981 13531 171 171 1.07% 1.26%

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 7835372 24834.73 1512 1479 315.4
A 13 248 198863 625.74 1512 1479 315.4
A 7 3 150842 473.51 1512 1479 315.4
B 4 21 304525 1005.37 1519 1470 301.4
B 0 200 194449 640.2 1519 1470 301.4
B 0 186 170755 561.59 1519 1470 301.4
C 12 2 352629 992.7 1499 1506 353.7
C 12 249 13792 34.74 1499 1506 353.7
C 3 233 13116 32.82 1499 1506 353.7
D 12 1 810059 2158.7 1500 1457 374.6
D 2 120 375810 999.4 1500 1457 374.6
D 2 249 114761 302.48 1500 1457 374.6

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