ASTROSAT CZTI

Data Quality Report

Orbit 53209

Creation date: 2025-07-30T07:49:57.831075
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_53209cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53209cztM0_level2_quad_clean.evt
Size (bytes)803,946,24080,334,720
Size766.7 MB 76.6 MB
Events in quadrant A3,303,318628,572
Events in quadrant B4,452,466663,211
Events in quadrant C6,718,455527,367
Events in quadrant D14,794,295170,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146812
B0175802
C0243822
D0482815

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63361231.941288%
B63363886.123737%
C6336104616.508838%
D6335472474.569850%

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 7541 6337 85 85 1.13% 1.34%
B 7541 6337 292 292 3.87% 4.61%
C 7541 6336 922 922 12.23% 14.55%
D 7540 6336 4950 4950 65.65% 78.12%

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 4 249 295937 1792.55 661 644 164.7
A 0 8 160696 971.58 661 644 164.7
A 15 174 54740 328.38 661 644 164.7
B 2 249 1271391 9304.2 656 635 136.6
B 4 81 240503 1756.26 656 635 136.6
B 10 247 102571 746.35 656 635 136.6
C 15 224 2212528 13126.53 604 600 168.5
C 4 5 934277 5540.84 604 600 168.5
C 15 165 331196 1961.9 604 600 168.5
D 15 125 10826637 86003.24 421 400 125.9
D 2 62 830927 6597.68 421 400 125.9
D 2 153 287563 2281.21 421 400 125.9

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