ASTROSAT CZTI

Data Quality Report

Orbit 41545

Creation date: 2024-06-27T22:30:16.096101
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_035T02_9000005676_41545cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41545cztM0_level2_quad_clean.evt
Size (bytes)339,886,08092,064,960
Size324.1 MB 87.8 MB
Events in quadrant A2,916,781639,477
Events in quadrant B3,224,310644,475
Events in quadrant C2,996,091581,878
Events in quadrant D3,041,517559,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118442
B0130852
C0120392
D0126272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5172200.386698%
B5171961.856507%
C51712154.157803%
D51711302.514020%

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 7085 5173 4 4 0.06% 0.08%
B 7084 5172 30 30 0.42% 0.58%
C 7084 5172 210 210 2.96% 4.06%
D 7084 5172 116 116 1.64% 2.24%

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 525094 4301.0 601 589 121.9
A 14 235 57063 463.09 601 589 121.9
A 13 254 8684 66.38 601 589 121.9
B 0 186 563855 5017.22 593 578 112.3
B 0 189 150716 1337.31 593 578 112.3
B 0 245 83607 739.56 593 578 112.3
C 0 10 561199 4326.22 560 564 129.6
C 15 214 222232 1710.53 560 564 129.6
C 9 54 11602 85.18 560 564 129.6
D 13 249 372348 2665.7 575 560 139.5
D 2 249 185739 1327.72 575 560 139.5
D 12 6 97533 695.29 575 560 139.5

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