ASTROSAT CZTI

Data Quality Report

Orbit 52538

Creation date: 2025-06-15T03:07:15.131049
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_9000006478_52538cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52538cztM0_level2_quad_clean.evt
Size (bytes)720,999,36081,708,480
Size687.6 MB 77.9 MB
Events in quadrant A2,935,445629,272
Events in quadrant B4,114,472636,311
Events in quadrant C8,112,921424,296
Events in quadrant D11,037,521343,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134811
B0165451
C0286191
D0371071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301470.745913%
B63022634.173278%
C6302192430.529990%
D6302288845.826722%

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 7311 6302 10 10 0.14% 0.16%
B 7311 6302 142 142 1.94% 2.25%
C 7312 6302 1534 1534 20.98% 24.34%
D 7312 6303 2557 2557 34.97% 40.57%

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 0 12 80792 473.72 670 653 169.2
A 4 249 68949 403.72 670 653 169.2
A 15 174 54895 320.64 670 653 169.2
B 10 44 352288 2578.28 649 630 136.4
B 5 172 260254 1903.51 649 630 136.4
B 10 254 186892 1365.63 649 630 136.4
C 15 224 3420839 22204.28 553 549 154.0
C 2 12 1425863 9253.04 553 549 154.0
C 13 3 395806 2565.98 553 549 154.0
D 6 42 2966645 19766.98 516 491 150.1
D 15 125 2166753 14436.36 516 491 150.1
D 8 176 1653349 11014.94 516 491 150.1

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