ASTROSAT CZTI

Data Quality Report

Orbit 50769

Creation date: 2025-02-16T01:08:20.228784
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/AS1C07_001T01_9000006450_50769cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50769cztM0_level2_quad_clean.evt
Size (bytes)576,417,60093,873,600
Size549.7 MB 89.5 MB
Events in quadrant A6,273,902564,665
Events in quadrant B4,123,376683,149
Events in quadrant C4,973,430597,691
Events in quadrant D5,469,349548,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230932
B0167432
C0191142
D0207055

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A641396815.094340%
B64142994.661678%
C64143134.879950%
D64134797.469203%

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 7568 6414 678 678 8.96% 10.57%
B 7569 6415 153 153 2.02% 2.39%
C 7569 6415 194 194 2.56% 3.02%
D 7568 6413 357 357 4.72% 5.57%

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 4 4 2930110 17481.43 677 662 167.6
A 4 3 112399 666.79 677 662 167.6
A 3 114 105249 624.12 677 662 167.6
B 4 206 780633 5339.97 699 674 146.1
B 7 0 124933 850.73 699 674 146.1
B 10 247 122620 834.9 699 674 146.1
C 5 10 897151 4765.79 686 681 188.1
C 13 3 212582 1126.5 686 681 188.1
C 15 231 174699 925.11 686 681 188.1
D 2 216 635493 3444.45 669 646 184.3
D 15 174 626576 3396.07 669 646 184.3
D 11 245 229572 1242.07 669 646 184.3

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