ASTROSAT CZTI

Data Quality Report

Orbit 51903

Creation date: 2025-05-03T09:34:08.928455
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_011T05_9000006466_51903cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51903cztM0_level2_quad_clean.evt
Size (bytes)667,710,72087,615,360
Size636.8 MB 83.6 MB
Events in quadrant A5,453,464570,281
Events in quadrant B5,091,676619,766
Events in quadrant C5,391,320559,392
Events in quadrant D8,279,062451,401

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208591
B0196741
C0206011
D0290871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64734496.936505%
B64745879.067037%
C64745027.754093%
D6474142822.057461%

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 7473 6474 363 363 4.86% 5.61%
B 7474 6475 361 361 4.83% 5.58%
C 7474 6475 344 344 4.60% 5.31%
D 7474 6475 1283 1283 17.17% 19.81%

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 4 175 1178531 7256.69 644 627 162.3
A 15 174 400914 2466.04 644 627 162.3
A 7 64 302727 1861.14 644 627 162.3
B 12 32 1367071 9943.97 643 620 137.4
B 4 171 639267 4647.58 643 620 137.4
B 0 216 112402 813.46 643 620 137.4
C 14 245 721127 4088.82 629 620 176.2
C 15 192 624009 3537.68 629 620 176.2
C 15 248 599424 3398.16 629 620 176.2
D 6 42 1566456 8891.74 579 559 176.1
D 15 94 991557 5627.25 579 559 176.1
D 0 5 877445 4979.28 579 559 176.1

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