ASTROSAT CZTI

Data Quality Report

Orbit 53224

Creation date: 2025-08-01T11:06:34.686438
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_011T06_9000006490_53224cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53224cztM0_level2_quad_clean.evt
Size (bytes)611,389,44089,320,320
Size583.1 MB 85.2 MB
Events in quadrant A4,040,929615,914
Events in quadrant B3,322,539677,130
Events in quadrant C9,868,844409,178
Events in quadrant D4,905,579557,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165782
B0145182
C0337558
D0189542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63712293.594412%
B63711001.569612%
C6370220234.568289%
D63702533.971743%

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 7596 6372 188 188 2.47% 2.95%
B 7596 6372 45 45 0.59% 0.71%
C 7595 6371 2133 2133 28.08% 33.48%
D 7595 6371 248 248 3.27% 3.89%

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 3 62 644724 3918.06 653 638 164.4
A 0 8 297623 1806.6 653 638 164.4
A 15 174 124173 751.48 653 638 164.4
B 4 81 163862 1179.41 660 638 138.4
B 12 3 93728 672.64 660 638 138.4
B 5 185 89397 641.35 660 638 138.4
C 1 241 2919718 19848.39 532 528 147.1
C 9 38 2197744 14939.49 532 528 147.1
C 0 240 1007695 6848.01 532 528 147.1
D 12 3 595356 3281.19 631 603 181.3
D 11 176 337774 1860.14 631 603 181.3
D 6 42 270883 1491.11 631 603 181.3

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