ASTROSAT CZTI

Data Quality Report

Orbit 45518

Creation date: 2024-06-27T23:13:04.059433
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_031T01_9000006102_45518cztM0_level2.fits modeM0/AS1A13_031T01_9000006102_45518cztM0_level2_quad_clean.evt
Size (bytes)269,565,12056,036,160
Size257.1 MB 53.4 MB
Events in quadrant A3,009,332375,612
Events in quadrant B1,687,028400,302
Events in quadrant C1,576,309386,797
Events in quadrant D3,450,800302,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113261
B071401
C069051
D0125551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32622006.131208%
B3262892.728387%
C3262541.655426%
D326259418.209687%

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 4457 3263 20 20 0.45% 0.61%
B 4457 3263 6 6 0.13% 0.18%
C 4457 3263 1 1 0.02% 0.03%
D 4457 3263 409 409 9.18% 12.53%

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 1384011 16432.79 397 389 84.2
A 7 3 72636 858.05 397 389 84.2
A 13 248 11648 133.72 397 389 84.2
B 5 172 78870 981.02 399 386 80.0
B 0 186 14849 180.78 399 386 80.0
B 5 171 11095 133.86 399 386 80.0
C 14 254 19429 200.23 398 401 95.0
C 3 233 2874 26.02 398 401 95.0
C 13 61 2715 24.35 398 401 95.0
D 13 249 1346065 14633.08 368 356 92.0
D 1 52 386666 4200.69 368 356 92.0
D 2 249 201545 2187.7 368 356 92.0

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