ASTROSAT CZTI

Data Quality Report

Orbit 14748

Creation date: 2024-06-27T16:59:01.834534
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/AS1A04_203T01_9000002180_14748cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14748cztM0_level2_quad_clean.evt
Size (bytes)578,295,36075,021,120
Size551.5 MB 71.5 MB
Events in quadrant A6,065,639456,187
Events in quadrant B3,562,484472,137
Events in quadrant C4,178,107448,980
Events in quadrant D3,280,188453,474

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224182
B0143991
C0165971
D0134651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63085158.164236%
B63081031.632847%
C63081923.043754%
D6308761.204819%

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 7579 6309 364 364 4.80% 5.77%
B 7579 6309 6 6 0.08% 0.10%
C 7579 6309 91 91 1.20% 1.44%
D 7579 6309 4 4 0.05% 0.06%

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 8 15 2654211 15385.89 862 846 172.5
A 12 189 62110 355.25 862 846 172.5
A 3 1 18130 100.22 862 846 172.5
B 10 16 72263 446.78 859 842 159.9
B 0 205 48069 295.43 859 842 159.9
B 0 229 21699 130.47 859 842 159.9
C 4 254 531020 2840.09 821 827 186.7
C 3 233 433053 2315.31 821 827 186.7
C 13 61 5963 27.51 821 827 186.7
D 2 120 33809 149.47 845 825 220.7
D 2 234 26161 114.82 845 825 220.7
D 1 255 13906 59.28 845 825 220.7

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