ASTROSAT CZTI

Data Quality Report

Orbit 06851

Creation date: 2024-06-27T15:12:23.019029
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/AS1G06_135T03_9000000944_06851cztM0_level2.evt modeM0/AS1G06_135T03_9000000944_06851cztM0_level2_quad_clean.evt
Size (bytes)582,819,840108,633,600
Size555.8 MB 103.6 MB
Events in quadrant A4,214,593684,970
Events in quadrant B4,135,268693,268
Events in quadrant C3,917,327688,119
Events in quadrant D4,826,050652,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182343
B0180952
C0175522
D0202572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8214871.059167%
B82142042.483565%
C8214971.180911%
D82143203.895788%

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 8549 8218 1 1 0.01% 0.01%
B 8549 8218 29 29 0.34% 0.35%
C 8549 8218 24 24 0.28% 0.29%
D 8549 8218 165 165 1.93% 2.01%

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 8 15 385333 1961.26 960 938 196.0
A 15 239 104343 527.59 960 938 196.0
A 13 251 15771 75.68 960 938 196.0
B 0 228 258618 1398.04 970 944 184.3
B 15 204 32722 172.42 970 944 184.3
B 0 219 29276 153.72 970 944 184.3
C 10 22 146569 665.26 942 947 218.9
C 9 247 70417 317.37 942 947 218.9
C 13 61 7638 30.57 942 947 218.9
D 2 33 544943 2414.91 919 886 225.3
D 2 216 282941 1251.96 919 886 225.3
D 14 34 163291 720.87 919 886 225.3

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