ASTROSAT CZTI

Data Quality Report

Orbit 14550

Creation date: 2024-06-27T16:56:44.851662
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_081T01_9000002144_14550cztM0_level2.evt modeM0/AS1G08_081T01_9000002144_14550cztM0_level2_quad_clean.evt
Size (bytes)580,688,640111,772,800
Size553.8 MB 106.6 MB
Events in quadrant A4,455,578722,165
Events in quadrant B4,000,641711,059
Events in quadrant C4,426,409701,325
Events in quadrant D4,162,632695,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186053
B0171092
C0181702
D0178782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79781191.491602%
B79781141.428930%
C7978720.902482%
D7978951.190775%

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 9329 7981 2 2 0.02% 0.03%
B 9329 7981 1 1 0.01% 0.01%
C 9329 7981 12 12 0.13% 0.15%
D 9329 7981 50 50 0.54% 0.63%

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 467385 2343.74 979 957 199.0
A 0 23 164908 823.83 979 957 199.0
A 12 189 31544 153.69 979 957 199.0
B 0 219 42040 217.71 977 951 188.7
B 0 189 38268 197.72 977 951 188.7
B 12 111 22433 113.82 977 951 188.7
C 3 233 651073 2945.05 947 952 220.8
C 6 96 70583 315.43 947 952 220.8
C 14 225 11203 46.44 947 952 220.8
D 10 199 247536 1067.86 950 918 230.9
D 12 110 192607 830.02 950 918 230.9
D 2 152 89171 382.14 950 918 230.9

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