ASTROSAT CZTI

Data Quality Report

Orbit 38604

Creation date: 2024-06-27T21:53:59.890586
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_052T04_9000005388_38604cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38604cztM0_level2_quad_clean.evt
Size (bytes)373,115,52093,939,840
Size355.8 MB 89.6 MB
Events in quadrant A3,045,629652,725
Events in quadrant B2,785,400672,474
Events in quadrant C2,762,505639,998
Events in quadrant D4,798,405502,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121883
B0116362
C0113572
D0179232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5386250.464166%
B5386460.854066%
C5386170.315633%
D538681015.038990%

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 7208 5387 13 13 0.18% 0.24%
B 7208 5387 29 29 0.40% 0.54%
C 7208 5387 8 8 0.11% 0.15%
D 7208 5387 797 797 11.06% 14.79%

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 420276 3288.11 628 614 127.6
A 13 248 149084 1163.28 628 614 127.6
A 12 189 25448 194.58 628 614 127.6
B 5 200 93177 779.22 626 612 118.8
B 5 172 71154 593.83 626 612 118.8
B 0 183 45280 376.02 626 612 118.8
C 15 214 223506 1568.23 620 626 142.1
C 14 254 45644 316.76 620 626 142.1
C 15 159 28159 193.73 620 626 142.1
D 12 227 1490617 10720.05 572 555 139.0
D 1 47 365461 2625.27 572 555 139.0
D 13 249 200599 1439.19 572 555 139.0

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