ASTROSAT CZTI

Data Quality Report

Orbit 50684

Creation date: 2025-02-11T09:40:29.326261
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_241T01_9000006446_50684cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50684cztM0_level2_quad_clean.evt
Size (bytes)685,065,60086,768,640
Size653.3 MB 82.7 MB
Events in quadrant A3,972,985639,581
Events in quadrant B4,813,512688,372
Events in quadrant C11,886,670228,072
Events in quadrant D4,146,918588,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165812
B0190282
C0400082
D0176402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69261822.627779%
B69263615.212244%
C6926464867.109443%
D69252313.335740%

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 7896 6927 115 115 1.46% 1.66%
B 7896 6927 220 220 2.79% 3.18%
C 7896 6926 3530 3530 44.71% 50.97%
D 7895 6925 190 190 2.41% 2.74%

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 3 46 265616 1494.63 721 703 177.2
A 4 3 238495 1341.62 721 703 177.2
A 5 240 98114 549.59 721 703 177.2
B 4 170 1009889 6583.47 716 690 153.3
B 0 229 285498 1857.93 716 690 153.3
B 2 249 90348 584.88 716 690 153.3
C 1 44 9030280 84410.19 380 378 107.0
C 15 174 397807 3715.11 380 378 107.0
C 13 113 181116 1689.51 380 378 107.0
D 7 110 295472 1518.68 701 676 194.1
D 2 249 179387 920.65 701 676 194.1
D 7 96 157390 807.33 701 676 194.1

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