ASTROSAT CZTI

Data Quality Report

Orbit 50634

Creation date: 2025-02-07T00:10:32.765742
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_50634cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50634cztM0_level2_quad_clean.evt
Size (bytes)608,474,88084,867,840
Size580.3 MB 80.9 MB
Events in quadrant A3,688,495592,057
Events in quadrant B9,723,085443,692
Events in quadrant C4,688,620550,977
Events in quadrant D3,927,232536,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152371
B0333621
C0183161
D0162451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63992093.266135%
B6399223534.927332%
C63994597.172996%
D64001732.703125%

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 7324 6400 134 134 1.83% 2.09%
B 7324 6400 1775 1775 24.24% 27.73%
C 7324 6400 380 380 5.19% 5.94%
D 7325 6401 132 132 1.80% 2.06%

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 12 250 399900 2428.69 669 652 164.4
A 4 3 151527 917.8 669 652 164.4
A 8 38 78903 476.01 669 652 164.4
B 4 170 6001184 47384.5 594 574 126.6
B 5 172 673223 5311.65 594 574 126.6
B 5 185 274018 2159.28 594 574 126.6
C 15 174 1303507 7309.21 645 639 178.3
C 0 176 160305 895.74 645 639 178.3
C 13 3 113661 634.06 645 639 178.3
D 7 96 229149 1262.44 651 628 181.0
D 2 249 191483 1054.35 651 628 181.0
D 8 246 147714 812.56 651 628 181.0

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