ASTROSAT CZTI

Data Quality Report

Orbit 41170

Creation date: 2024-06-27T22:25:27.871443
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_101T04_9000005610_41170cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41170cztM0_level2_quad_clean.evt
Size (bytes)469,186,56088,655,040
Size447.5 MB 84.5 MB
Events in quadrant A3,048,322667,431
Events in quadrant B3,475,260656,815
Events in quadrant C6,372,729448,582
Events in quadrant D4,056,369538,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121313
B0137952
C0224862
D0156472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5332110.206302%
B53322735.120030%
C5332165831.095274%
D53325329.977494%

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 7424 5333 4 4 0.05% 0.08%
B 7424 5333 223 223 3.00% 4.18%
C 7424 5332 1390 1390 18.72% 26.07%
D 7424 5333 476 476 6.41% 8.93%

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 531057 4106.31 634 623 129.2
A 12 189 50921 389.38 634 623 129.2
A 13 254 8483 60.85 634 623 129.2
B 0 245 737646 6304.05 608 593 116.9
B 0 186 150735 1284.17 608 593 116.9
B 5 255 100926 858.15 608 593 116.9
C 9 54 3948818 34499.6 492 496 114.4
C 0 10 307109 2679.12 492 496 114.4
C 15 214 190872 1663.47 492 496 114.4
D 13 249 1222536 8497.62 582 568 143.8
D 2 249 259777 1802.55 582 568 143.8
D 7 39 232089 1610.01 582 568 143.8

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