ASTROSAT CZTI

Data Quality Report

Orbit 50626

Creation date: 2025-02-06T14:10:08.978941
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/AS1T05_239T01_9000006444_50626cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50626cztM0_level2_quad_clean.evt
Size (bytes)595,440,00095,241,600
Size567.9 MB 90.8 MB
Events in quadrant A4,174,382641,096
Events in quadrant B7,822,443572,768
Events in quadrant C4,385,792616,869
Events in quadrant D5,121,564571,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170941
B0280271
C01802511
D0202921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69212133.077590%
B6921159423.031354%
C69193635.246423%
D69214806.935414%

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 7831 6921 106 106 1.35% 1.53%
B 7831 6921 1230 1230 15.71% 17.77%
C 7831 6919 257 257 3.28% 3.71%
D 7831 6921 442 442 5.64% 6.39%

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 4 3 261509 1450.14 730 715 179.8
A 9 96 144278 798.28 730 715 179.8
A 8 38 110837 612.33 730 715 179.8
B 4 170 3577881 24673.02 684 661 145.0
B 7 0 520432 3585.0 684 661 145.0
B 5 185 252325 1735.79 684 661 145.0
C 4 5 297702 1531.31 706 701 194.0
C 15 232 265779 1366.72 706 701 194.0
C 15 174 191048 981.41 706 701 194.0
D 11 245 603464 3074.33 697 670 196.1
D 8 246 354134 1802.72 697 670 196.1
D 2 249 199431 1013.71 697 670 196.1

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