ASTROSAT CZTI

Data Quality Report

Orbit 15081

Creation date: 2024-06-27T17:03:28.537770
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/AS1T02_065T01_9000002218_15081cztM0_level2.evt modeM0/AS1T02_065T01_9000002218_15081cztM0_level2_quad_clean.evt
Size (bytes)499,613,76088,807,680
Size476.5 MB 84.7 MB
Events in quadrant A3,085,432573,707
Events in quadrant B3,183,665590,301
Events in quadrant C4,010,435558,532
Events in quadrant D4,428,720532,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129533
B0131812
C0161512
D0172012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224110.176735%
B6224170.273136%
C6224380.610540%
D62245328.547558%

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 7570 6226 0 0 0.00% 0.00%
B 7570 6226 0 0 0.00% 0.00%
C 7570 6226 0 0 0.00% 0.00%
D 7570 6226 514 514 6.79% 8.26%

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 12 189 24092 146.04 796 782 159.6
A 0 226 7094 39.55 796 782 159.6
A 12 194 5907 32.11 796 782 159.6
B 12 111 17753 112.16 801 782 151.3
B 11 111 14857 93.02 801 782 151.3
B 14 111 12776 79.27 801 782 151.3
C 3 233 877413 5012.87 767 774 174.9
C 7 247 141075 802.28 767 774 174.9
C 13 61 5355 26.2 767 774 174.9
D 9 1 1507391 8494.22 730 709 177.4
D 13 249 83276 465.49 730 709 177.4
D 13 104 33655 185.74 730 709 177.4

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