ASTROSAT CZTI

Data Quality Report

Orbit 34698

Creation date: 2022-07-18T19:09:55.750692
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/AS1A07_138T08_9000004970_34698cztM0_level2.evt modeM0/AS1A07_138T08_9000004970_34698cztM0_level2_quad_clean.evt
Size (bytes)452,727,36069,719,040
Size431.8 MB 66.5 MB
Events in quadrant A2,590,181451,661
Events in quadrant B3,348,698451,079
Events in quadrant C2,716,044444,668
Events in quadrant D4,713,441409,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105683
B0130492
C0108302
D0175112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5046140.277447%
B50461733.428458%
C5046270.535077%
D50462755.449861%

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 7168 5047 8 8 0.11% 0.16%
B 7168 5047 119 119 1.66% 2.36%
C 7168 5047 21 21 0.29% 0.42%
D 7168 5047 231 231 3.22% 4.58%

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 15 174 75983 603.66 629 618 124.8
A 10 83 46937 371.01 629 618 124.8
A 7 48 13250 101.18 629 618 124.8
B 5 172 530048 4598.76 612 598 115.1
B 5 255 203774 1764.77 612 598 115.1
B 0 190 88935 767.29 612 598 115.1
C 15 214 219131 1601.45 597 600 136.5
C 0 10 105285 767.16 597 600 136.5
C 14 67 38815 280.05 597 600 136.5
D 8 195 1418692 9864.23 591 575 143.8
D 2 250 658898 4579.21 591 575 143.8
D 2 249 86784 599.66 591 575 143.8

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