ASTROSAT CZTI

Data Quality Report

Orbit 54661

Creation date: 2025-11-05T01:20:32.692111
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_066T07_9000006522_54661cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54661cztM0_level2_quad_clean.evt
Size (bytes)610,493,76090,659,520
Size582.2 MB 86.5 MB
Events in quadrant A3,898,655653,767
Events in quadrant B3,320,208714,254
Events in quadrant C3,594,028622,640
Events in quadrant D11,286,656306,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160212
B0144092
C0151562
D0379608

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64193114.844991%
B64191001.557875%
C64192123.302695%
D6418336252.383920%

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 7619 6420 212 212 2.78% 3.30%
B 7619 6420 14 14 0.18% 0.22%
C 7619 6420 116 116 1.52% 1.81%
D 7617 6417 2806 2806 36.84% 43.73%

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 11 3 478800 2659.6 735 717 179.8
A 13 248 258832 1435.91 735 717 179.8
A 7 14 198797 1101.93 735 717 179.8
B 5 172 209586 1308.58 736 709 159.6
B 5 185 66155 410.01 736 709 159.6
B 10 247 36491 224.17 736 709 159.6
C 9 38 332354 1662.21 724 715 199.5
C 13 3 225303 1125.66 724 715 199.5
C 4 5 143749 716.9 724 715 199.5
D 11 129 6905539 49013.94 495 474 140.9
D 2 172 823717 5843.59 495 474 140.9
D 0 19 508452 3605.76 495 474 140.9

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