ASTROSAT CZTI

Data Quality Report

Orbit 55330

Creation date: 2025-12-20T15:33:24.120366
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_009T01_9000006534_55330cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55330cztM0_level2_quad_clean.evt
Size (bytes)466,536,96096,693,120
Size444.9 MB 92.2 MB
Events in quadrant A4,794,331617,744
Events in quadrant B3,106,448689,811
Events in quadrant C4,324,544599,044
Events in quadrant D4,540,165568,382

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188132
B0140422
C0175282
D0179802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64904136.363636%
B6490651.001541%
C64902483.821263%
D64903164.869029%

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 7655 6491 432 432 5.64% 6.66%
B 7655 6491 16 16 0.21% 0.25%
C 7655 6491 198 198 2.59% 3.05%
D 7655 6491 321 321 4.19% 4.95%

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 12 115 884476 5232.5 682 664 168.9
A 3 14 581070 3436.22 682 664 168.9
A 0 8 390649 2308.86 682 664 168.9
B 0 199 156863 1066.0 686 662 146.5
B 2 249 60489 408.29 686 662 146.5
B 5 185 57542 388.18 686 662 146.5
C 9 38 1145466 6178.0 672 666 185.3
C 12 249 214137 1152.01 672 666 185.3
C 13 3 156209 839.4 672 666 185.3
D 11 129 810957 4259.01 673 644 190.3
D 3 12 321849 1688.25 673 644 190.3
D 11 176 285286 1496.08 673 644 190.3

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