ASTROSAT CZTI

Data Quality Report

Orbit 53248

Creation date: 2025-08-02T00:04:10.706518
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/AS1C09_011T08_9000006492_53248cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53248cztM0_level2_quad_clean.evt
Size (bytes)556,983,36091,560,960
Size531.2 MB 87.3 MB
Events in quadrant A3,606,341617,246
Events in quadrant B4,811,619649,182
Events in quadrant C7,749,595496,478
Events in quadrant D3,948,173557,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152462
B0187702
C0275742
D0161773

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64731532.363664%
B64741932.981155%
C6474123919.138091%
D64731512.332767%

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 7433 6475 116 116 1.56% 1.79%
B 7434 6476 107 107 1.44% 1.65%
C 7434 6476 1126 1126 15.15% 17.39%
D 7433 6474 111 111 1.49% 1.71%

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 7 206 265593 1566.39 681 664 169.1
A 4 238 132976 782.29 681 664 169.1
A 3 62 121517 714.54 681 664 169.1
B 12 33 1118794 7847.39 670 648 142.5
B 2 249 224653 1572.12 670 648 142.5
B 4 170 179337 1254.08 670 648 142.5
C 15 165 2034154 12123.8 613 607 167.7
C 4 5 1035764 6171.5 613 607 167.7
C 15 224 809963 4825.3 613 607 167.7
D 2 37 235533 1232.9 663 632 190.5
D 8 48 188843 987.84 663 632 190.5
D 13 170 171274 895.63 663 632 190.5

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