ASTROSAT CZTI

Data Quality Report

Orbit 50599

Creation date: 2025-02-04T15:03:16.825516
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/AS1T05_239T01_9000006444_50599cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50599cztM0_level2_quad_clean.evt
Size (bytes)742,999,680105,575,040
Size708.6 MB 100.7 MB
Events in quadrant A4,643,485716,087
Events in quadrant B9,926,654630,315
Events in quadrant C4,974,763679,602
Events in quadrant D7,348,347621,955

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191751
B0352041
C0206572
D0273911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78871481.876506%
B7887189023.963484%
C78873864.894130%
D78876368.063903%

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 7887 7887 101 101 1.28% 1.28%
B 7887 7887 1403 1403 17.79% 17.79%
C 7887 7887 309 309 3.92% 3.92%
D 7887 7887 739 739 9.37% 9.37%

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 12 250 382618 1889.65 822 802 202.1
A 10 253 144607 711.71 822 802 202.1
A 5 240 126231 620.76 822 802 202.1
B 5 172 4066291 25145.38 752 726 161.7
B 4 170 640164 3954.9 752 726 161.7
B 0 229 332740 2053.49 752 726 161.7
C 0 208 472007 2145.65 791 784 219.6
C 15 232 281695 1279.09 791 784 219.6
C 4 5 233525 1059.75 791 784 219.6
D 8 48 1041588 4907.6 774 748 212.1
D 12 191 827384 3897.62 774 748 212.1
D 10 98 744571 3507.15 774 748 212.1

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