ASTROSAT CZTI

Data Quality Report

Orbit 14624

Creation date: 2024-06-27T16:57:39.815723
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/AS1G08_026T01_9000002154_14624cztM0_level2.evt modeM0/AS1G08_026T01_9000002154_14624cztM0_level2_quad_clean.evt
Size (bytes)652,452,480116,040,960
Size622.2 MB 110.7 MB
Events in quadrant A4,315,446751,050
Events in quadrant B4,044,351752,670
Events in quadrant C5,976,260729,086
Events in quadrant D4,872,055715,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180823
B0174142
C0236252
D0202182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81481451.779578%
B81481642.012764%
C81481471.804124%
D81484024.933726%

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 8719 8153 1 1 0.01% 0.01%
B 8719 8151 1 1 0.01% 0.01%
C 8719 8153 0 0 0.00% 0.00%
D 8719 8153 283 283 3.25% 3.47%

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 1 162 169109 833.09 986 964 201.8
A 1 178 80691 395.01 986 964 201.8
A 1 161 70247 343.27 986 964 201.8
B 0 189 73352 375.31 988 961 192.9
B 0 229 24955 124.39 988 961 192.9
B 0 214 23817 118.49 988 961 192.9
C 3 233 2231151 10021.96 957 961 222.5
C 3 234 7836 30.89 957 961 222.5
C 13 61 6958 26.95 957 961 222.5
D 10 199 870859 3871.49 944 920 224.7
D 12 110 330304 1465.86 944 920 224.7
D 15 145 36746 159.44 944 920 224.7

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