ASTROSAT CZTI

Data Quality Report

Orbit 44721

Creation date: 2024-06-27T23:05:43.388297
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_009T01_9000006016_44721cztM0_level2.fits modeM0/AS1A13_009T01_9000006016_44721cztM0_level2_quad_clean.evt
Size (bytes)525,611,520109,183,680
Size501.3 MB 104.1 MB
Events in quadrant A5,103,818739,656
Events in quadrant B3,630,382772,615
Events in quadrant C3,019,428745,501
Events in quadrant D7,202,182597,853

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206422
B0151762
C0134872
D0259042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64551953.020914%
B64552003.098373%
C6455230.356313%
D645591914.237026%

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 7670 6456 11 11 0.14% 0.17%
B 7670 6456 72 72 0.94% 1.12%
C 7670 6456 5 5 0.07% 0.08%
D 7670 6456 783 783 10.21% 12.13%

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 2045861 13160.39 750 736 155.4
A 15 223 83108 530.06 750 736 155.4
A 13 248 48153 305.13 750 736 155.4
B 0 189 272765 1835.6 755 733 148.2
B 5 255 114539 767.93 755 733 148.2
B 5 172 72895 486.93 755 733 148.2
C 14 254 67238 377.15 745 753 176.3
C 0 207 19760 107.82 745 753 176.3
C 1 3 11182 59.16 745 753 176.3
D 1 52 1044852 5973.71 694 674 174.8
D 13 174 904628 5171.49 694 674 174.8
D 3 13 717559 4101.27 694 674 174.8

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