ASTROSAT CZTI

Data Quality Report

Orbit 54259

Creation date: 2025-10-09T18:22:57.405317
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_004T08_9000006514_54259cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54259cztM0_level2_quad_clean.evt
Size (bytes)694,157,76095,388,480
Size662.0 MB 91.0 MB
Events in quadrant A4,776,052663,479
Events in quadrant B4,876,365724,740
Events in quadrant C5,245,764599,034
Events in quadrant D10,234,655395,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019853561
B019833643
C021521631
D0373801976

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01490
C01472
D01475

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72904055.555556%
B72502203.034483%
C73015777.903027%
D7167254435.496023%

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 7521 7443 333 333 4.43% 4.47%
B 7522 7442 105 105 1.40% 1.41%
C 7522 7448 473 473 6.29% 6.35%
D 7522 7359 2381 2381 31.65% 32.35%

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 29 749164 4037.87 749 730 185.4
A 12 17 413515 2227.01 749 730 185.4
A 15 174 184138 989.5 749 730 185.4
B 7 0 907351 5716.65 746 718 158.6
B 5 236 327006 2057.36 746 718 158.6
B 0 213 207461 1303.59 746 718 158.6
C 1 29 1548610 7867.69 717 709 196.7
C 14 254 312909 1586.85 717 709 196.7
C 13 3 217220 1100.48 717 709 196.7
D 8 176 7155086 42406.92 600 575 168.7
D 10 181 200314 1183.91 600 575 168.7
D 3 144 108593 640.25 600 575 168.7

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