ASTROSAT CZTI

Data Quality Report

Orbit 52832

Creation date: 2025-07-15T20:51:57.045479
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_9000006482_52832cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52832cztM0_level2_quad_clean.evt
Size (bytes)966,496,32058,273,920
Size921.7 MB 55.6 MB
Events in quadrant A11,861,630192,904
Events in quadrant B9,479,115382,643
Events in quadrant C8,023,090353,492
Events in quadrant D5,980,082441,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390877
B0320231
C0276891
D0216381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5615395770.471950%
B5616231041.132479%
C5616201535.879630%
D561697317.325499%

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 6775 5616 3574 3574 52.75% 63.64%
B 6776 5617 2066 2066 30.49% 36.78%
C 6776 5617 1698 1698 25.06% 30.23%
D 6776 5617 870 870 12.84% 15.49%

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 9 191 9069665 90364.34 393 383 100.4
A 4 238 394314 3925.04 393 383 100.4
A 3 14 221355 2201.72 393 383 100.4
B 8 3 7086787 66055.69 509 492 107.3
B 10 254 57864 534.8 509 492 107.3
B 5 185 48046 443.28 509 492 107.3
C 2 12 2972025 22288.13 477 470 133.3
C 15 224 2278211 17084.18 477 470 133.3
C 7 80 606816 4547.89 477 470 133.3
D 8 176 2152718 13665.76 547 521 157.5
D 10 172 509190 3229.89 547 521 157.5
D 3 12 349838 2218.05 547 521 157.5

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