ASTROSAT CZTI

Data Quality Report

Orbit 54448

Creation date: 2025-10-21T18:32:12.257628
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/AS1A14_126T19_9000006518_54448cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54448cztM0_level2_quad_clean.evt
Size (bytes)564,281,28093,945,600
Size538.1 MB 89.6 MB
Events in quadrant A3,508,395639,194
Events in quadrant B3,674,170668,380
Events in quadrant C3,482,503608,824
Events in quadrant D9,681,211442,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157840
B0161510
C0154840
D0336160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69721061.520367%
B69732473.542234%
C6973781.118600%
D6973183426.301448%

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 6972 6972 96 96 1.38% 1.38%
B 6973 6973 168 168 2.41% 2.41%
C 6973 6973 64 64 0.92% 0.92%
D 6973 6973 1604 1604 23.00% 23.00%

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 9 403864 2258.73 721 701 178.5
A 5 243 227014 1267.93 721 701 178.5
A 4 3 39834 219.24 721 701 178.5
B 2 249 493553 3226.26 704 677 152.8
B 5 185 216434 1412.3 704 677 152.8
B 0 213 77171 500.71 704 677 152.8
C 13 3 445063 2318.06 697 691 191.7
C 11 244 128427 666.33 697 691 191.7
C 14 254 109821 569.28 697 691 191.7
D 8 176 3845344 21411.82 626 598 179.6
D 2 172 1913392 10652.56 626 598 179.6
D 3 12 425938 2368.77 626 598 179.6

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