ASTROSAT CZTI

Data Quality Report

Orbit 33802

Creation date: 2024-06-27T20:52:56.953122
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/AS1T04_091T01_9000004822_33802cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33802cztM0_level2_quad_clean.evt
Size (bytes)549,515,52074,102,400
Size524.1 MB 70.7 MB
Events in quadrant A3,894,411469,252
Events in quadrant B3,296,515479,708
Events in quadrant C3,252,038482,303
Events in quadrant D5,852,373453,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149933
B0130362
C0127472
D0210652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512360211.750927%
B51231893.689245%
C51231432.791333%
D51233867.534648%

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 7126 5124 409 409 5.74% 7.98%
B 7126 5124 115 115 1.61% 2.24%
C 7126 5124 107 107 1.50% 2.09%
D 7126 5124 378 378 5.30% 7.38%

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 15 237 1625010 13973.07 579 570 116.3
A 13 6 12765 104.9 579 570 116.3
A 10 83 10243 83.2 579 570 116.3
B 5 172 554121 4784.8 607 592 115.7
B 4 251 160793 1384.81 607 592 115.7
B 0 190 53110 453.97 607 592 115.7
C 9 187 284182 2043.02 602 608 138.8
C 15 214 222950 1601.87 602 608 138.8
C 0 10 142011 1018.74 602 608 138.8
D 12 235 1528664 10366.81 593 576 147.4
D 8 195 1395529 9463.6 593 576 147.4
D 12 233 207426 1403.31 593 576 147.4

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