ASTROSAT CZTI

Data Quality Report

Orbit 06478

Creation date: 2024-06-27T15:07:45.301853
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/AS1A02_046T01_9000000864_06478cztM0_level2.evt modeM0/AS1A02_046T01_9000000864_06478cztM0_level2_quad_clean.evt
Size (bytes)540,561,600150,799,680
Size515.5 MB 143.8 MB
Events in quadrant A3,886,1671,011,278
Events in quadrant B3,972,8161,011,183
Events in quadrant C3,742,553990,865
Events in quadrant D4,192,608964,457

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174093
B0176002
C0172342
D0182412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8494440.518013%
B8494590.694608%
C8494380.447375%
D8494861.012479%

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 9574 8496 0 0 0.00% 0.00%
B 9574 8496 9 9 0.09% 0.11%
C 9574 8496 0 0 0.00% 0.00%
D 9574 8496 18 18 0.19% 0.21%

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 56606 274.55 985 963 202.7
A 15 234 12953 59.16 985 963 202.7
A 15 236 9832 43.76 985 963 202.7
B 0 219 45165 233.96 988 960 188.9
B 0 245 23455 119.06 988 960 188.9
B 12 111 18674 93.75 988 960 188.9
C 12 4 11872 49.19 953 954 221.9
C 1 16 9556 38.76 953 954 221.9
C 13 61 7528 29.62 953 954 221.9
D 2 152 173709 739.35 959 927 233.7
D 7 55 76544 323.57 959 927 233.7
D 13 137 72297 305.4 959 927 233.7

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