ASTROSAT CZTI

Data Quality Report

Orbit 58645

Creation date: 2026-07-31T03:10:18.122803
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_004T06_9000006594_58645cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58645cztM0_level2_quad_clean.evt
Size (bytes)471,340,80082,316,160
Size449.5 MB 78.5 MB
Events in quadrant A2,966,789561,988
Events in quadrant B2,819,768618,323
Events in quadrant C3,183,808552,218
Events in quadrant D8,022,417351,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013748778
B013097516
C014252692
D0302512478

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01242
B01242
C01235
D01244

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58671532.607806%
B5906560.948188%
C58621342.285909%
D5712202535.451681%

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 7592 6007 49 49 0.65% 0.82%
B 7592 6039 10 10 0.13% 0.17%
C 7592 6009 61 61 0.80% 1.02%
D 7592 5840 1694 1694 22.31% 29.01%

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 10 17 260559 1628.78 640 623 159.6
A 12 114 105255 655.63 640 623 159.6
A 3 14 37477 230.93 640 623 159.6
B 6 255 52453 374.5 643 619 138.4
B 8 234 50071 357.29 643 619 138.4
B 0 171 30372 214.97 643 619 138.4
C 12 252 270580 1546.67 632 626 174.5
C 15 217 215981 1233.85 632 626 174.5
C 15 204 72637 412.58 632 626 174.5
D 2 249 3996113 27475.11 512 492 145.4
D 11 129 1634342 11234.85 512 492 145.4
D 8 240 94906 649.22 512 492 145.4

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