ASTROSAT CZTI

Data Quality Report

Orbit 25527

Creation date: 2024-06-27T19:18:39.643190
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/AS1A07_147T01_9000003722_25527cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25527cztM0_level2_quad_clean.evt
Size (bytes)1,293,575,040230,189,760
Size1.2 GB 219.5 MB
Events in quadrant A8,519,2251,470,485
Events in quadrant B8,842,4531,484,360
Events in quadrant C8,562,0521,405,818
Events in quadrant D12,030,9901,365,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371880
B0379120
C0371950
D0478040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180801260.696903%
B180801760.973451%
C180802321.283186%
D180804302.378319%

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 19900 18083 0 0 0.00% 0.00%
B 19900 18083 2 2 0.01% 0.01%
C 19900 18083 1 1 0.01% 0.01%
D 19900 18083 283 283 1.42% 1.57%

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 6 16 33145 70.37 2201 2155 440.4
A 13 254 26218 54.64 2201 2155 440.4
A 3 137 21076 42.97 2201 2155 440.4
B 15 33 176484 415.15 2186 2132 420.0
B 12 111 52126 119.04 2186 2132 420.0
B 0 190 49239 112.17 2186 2132 420.0
C 14 238 333921 673.37 2099 2113 492.8
C 2 16 30050 56.69 2099 2113 492.8
C 3 233 17857 31.95 2099 2113 492.8
D 1 52 2639598 5162.68 2114 2052 510.9
D 8 195 1316002 2571.9 2114 2052 510.9
D 2 234 70582 134.14 2114 2052 510.9

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