ASTROSAT CZTI

Data Quality Report

Orbit 27971

Creation date: 2024-06-27T19:46:36.976157
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/AS1A10_065T03_9000004040_27971cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27971cztM0_level2_quad_clean.evt
Size (bytes)614,880,000115,413,120
Size586.4 MB 110.1 MB
Events in quadrant A3,908,767771,159
Events in quadrant B3,949,357751,917
Events in quadrant C3,904,769709,266
Events in quadrant D6,321,234711,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167340
B0168570
C0167050
D0240360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7930991.248424%
B79291882.371043%
C79291431.803506%
D79293804.792534%

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 8275 7932 0 0 0.00% 0.00%
B 8274 7930 4 4 0.05% 0.05%
C 8274 7930 0 0 0.00% 0.00%
D 8274 7931 274 274 3.31% 3.45%

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 13 254 11839 53.47 1010 990 202.9
A 3 137 10494 46.85 1010 990 202.9
A 0 226 8451 36.78 1010 990 202.9
B 10 245 29601 146.21 992 964 195.9
B 12 111 25138 123.43 992 964 195.9
B 11 111 22761 111.29 992 964 195.9
C 14 238 150237 661.62 953 958 225.6
C 2 16 15173 63.0 953 958 225.6
C 8 128 13173 54.14 953 958 225.6
D 1 52 1621131 7012.86 959 932 231.0
D 8 195 656442 2837.3 959 932 231.0
D 7 80 295067 1273.13 959 932 231.0

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