ASTROSAT CZTI

Data Quality Report

Orbit 39224

Creation date: 2024-06-27T22:01:58.648955
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_054T04_9000005446_39224cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39224cztM0_level2_quad_clean.evt
Size (bytes)597,818,88082,149,120
Size570.1 MB 78.3 MB
Events in quadrant A3,020,525636,005
Events in quadrant B2,566,509651,887
Events in quadrant C2,619,160617,945
Events in quadrant D13,474,854178,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127683
B0118122
C0117082
D0439652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5758500.868357%
B5758130.225773%
C575820.034734%
D5758431374.904481%

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 7372 5759 30 30 0.41% 0.52%
B 7372 5759 3 3 0.04% 0.05%
C 7372 5759 0 0 0.00% 0.00%
D 7372 5757 3869 3869 52.48% 67.21%

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 451834 3600.88 618 606 125.3
A 13 248 107860 855.91 618 606 125.3
A 15 174 62302 492.35 618 606 125.3
B 5 172 51865 432.15 616 599 118.6
B 0 190 29464 243.32 616 599 118.6
B 12 18 22875 187.77 616 599 118.6
C 15 214 239366 1718.7 598 601 138.9
C 0 239 30415 214.61 598 601 138.9
C 0 10 5151 32.75 598 601 138.9
D 12 235 11361313 120775.49 382 369 94.1
D 1 47 267158 2836.17 382 369 94.1
D 5 222 160664 1704.06 382 369 94.1

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