ASTROSAT CZTI

Data Quality Report

Orbit 15736

Creation date: 2024-06-27T17:12:50.340632
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/AS1T02_095T01_9000002330_15736cztM0_level2.evt modeM0/AS1T02_095T01_9000002330_15736cztM0_level2_quad_clean.evt
Size (bytes)150,649,92030,291,840
Size143.7 MB 28.9 MB
Events in quadrant A915,376197,363
Events in quadrant B994,782202,611
Events in quadrant C1,022,052197,516
Events in quadrant D1,500,424182,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039912
B041563
C042361
D057681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1869824.387373%
B18681045.567452%
C1869884.708400%
D186925113.429642%

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 2565 1871 0 0 0.00% 0.00%
B 2565 1871 0 0 0.00% 0.00%
C 2565 1871 0 0 0.00% 0.00%
D 2565 1871 137 137 5.34% 7.32%

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 9 143 7567 146.94 235 229 49.9
A 13 210 2484 45.16 235 229 49.9
A 0 226 2107 37.61 235 229 49.9
B 4 251 43556 898.87 234 228 48.2
B 0 85 25970 534.04 234 228 48.2
B 12 111 5660 112.69 234 228 48.2
C 15 127 79944 1480.62 223 223 53.8
C 14 238 34027 627.82 223 223 53.8
C 3 233 31111 573.67 223 223 53.8
D 1 52 655136 12120.19 216 208 54.0
D 12 6 9918 179.69 216 208 54.0
D 12 110 7571 136.26 216 208 54.0

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