ASTROSAT CZTI

Data Quality Report

Orbit 56624

Creation date: 2026-03-17T03:42:15.480324
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_083T06_9000006558_56624cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56624cztM0_level2_quad_clean.evt
Size (bytes)403,462,08094,268,160
Size384.8 MB 89.9 MB
Events in quadrant A4,179,199586,592
Events in quadrant B3,550,023677,248
Events in quadrant C3,196,591591,430
Events in quadrant D3,508,889550,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172492
B0150632
C0142282
D0151372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64255248.155642%
B64251382.147860%
C6425671.042802%
D6425901.400778%

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 7615 6426 441 441 5.79% 6.86%
B 7615 6426 74 74 0.97% 1.15%
C 7615 6426 72 72 0.95% 1.12%
D 7615 6426 78 78 1.02% 1.21%

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 95 894523 5439.29 663 648 164.3
A 10 251 581765 3536.14 663 648 164.3
A 4 249 73542 443.57 663 648 164.3
B 0 231 306925 2128.28 680 656 143.9
B 10 247 121986 843.13 680 656 143.9
B 4 21 116270 803.41 680 656 143.9
C 6 223 264865 1455.93 657 648 181.5
C 1 16 137268 752.82 657 648 181.5
C 12 249 114176 625.58 657 648 181.5
D 6 239 319201 1747.26 646 618 182.3
D 2 249 128088 699.11 646 618 182.3
D 3 12 98661 537.72 646 618 182.3

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