ASTROSAT CZTI

Data Quality Report

Orbit 54510

Creation date: 2025-10-25T22:37:54.402103
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_54510cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54510cztM0_level2_quad_clean.evt
Size (bytes)522,288,000119,658,240
Size498.1 MB 114.1 MB
Events in quadrant A4,105,008785,657
Events in quadrant B4,049,820832,594
Events in quadrant C5,516,086723,559
Events in quadrant D5,004,474692,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182320
B0181630
C0225550
D0207880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84681421.676901%
B84682152.538970%
C84684265.030704%
D84682422.857818%

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 8468 8468 14 14 0.17% 0.17%
B 8468 8468 33 33 0.39% 0.39%
C 8468 8468 330 330 3.90% 3.90%
D 8468 8468 140 140 1.65% 1.65%

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 3 14 259779 1131.99 931 905 228.7
A 4 3 73334 316.71 931 905 228.7
A 8 245 53572 230.3 931 905 228.7
B 0 213 191488 961.73 915 881 198.2
B 5 185 104740 524.03 915 881 198.2
B 5 172 35812 176.25 915 881 198.2
C 13 3 574556 2367.62 888 879 242.3
C 15 209 348477 1434.57 888 879 242.3
C 15 147 284072 1168.77 888 879 242.3
D 10 181 313357 1233.01 895 853 253.4
D 3 12 297526 1170.54 895 853 253.4
D 14 52 209918 824.88 895 853 253.4

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