ASTROSAT CZTI

Data Quality Report

Orbit 54564

Creation date: 2025-10-29T15:14:50.918337
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/AS1A14_127T09_9000006520_54564cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54564cztM0_level2_quad_clean.evt
Size (bytes)527,595,840114,485,760
Size503.2 MB 109.2 MB
Events in quadrant A3,742,493761,711
Events in quadrant B4,715,209794,765
Events in quadrant C4,304,390711,277
Events in quadrant D6,141,614638,551

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170717
B01987511
C0188604
D0242111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01610
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8060420.521092%
B80612693.337055%
C80611792.220568%
D80636127.590227%

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 8064 8064 19 19 0.24% 0.24%
B 8064 8064 131 131 1.62% 1.62%
C 8063 8063 143 143 1.77% 1.77%
D 8064 8064 573 573 7.11% 7.11%

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 11 3 134430 619.45 871 850 215.6
A 3 14 114898 528.88 871 850 215.6
A 0 8 53508 244.19 871 850 215.6
B 10 14 627587 3410.84 853 820 183.8
B 2 249 352252 1912.48 853 820 183.8
B 0 213 85067 458.47 853 820 183.8
C 13 3 642705 2769.56 841 834 231.8
C 4 5 115701 495.63 841 834 231.8
C 14 254 76087 324.7 841 834 231.8
D 3 12 2623345 11317.33 811 775 231.7
D 3 224 129289 554.58 811 775 231.7
D 5 173 60468 257.6 811 775 231.7

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