ASTROSAT CZTI

Data Quality Report

Orbit 21659

Creation date: 2024-06-27T18:30:47.023133
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/AS1A06_002T02_9000003206_21659cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21659cztM0_level2_quad_clean.evt
Size (bytes)575,066,88092,626,560
Size548.4 MB 88.3 MB
Events in quadrant A3,753,450578,359
Events in quadrant B4,063,242587,633
Events in quadrant C3,896,204559,527
Events in quadrant D5,166,329529,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163472
B0170202
C0165342
D0205502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79062563.238047%
B79063194.034910%
C79072773.503225%
D79074415.577337%

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 8246 7909 0 0 0.00% 0.00%
B 8246 7909 26 26 0.32% 0.33%
C 8247 7910 0 0 0.00% 0.00%
D 8247 7910 213 213 2.58% 2.69%

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 15 236 20735 100.83 969 946 196.3
A 13 254 10428 48.31 969 946 196.3
A 3 137 8599 39.0 969 946 196.3
B 3 64 163574 874.91 965 938 185.9
B 0 230 32260 168.5 965 938 185.9
B 4 171 23983 123.97 965 938 185.9
C 14 238 146103 666.23 928 933 217.9
C 9 54 75244 341.03 928 933 217.9
C 10 22 21474 94.27 928 933 217.9
D 1 52 659510 2918.88 927 896 225.6
D 7 238 328617 1452.41 927 896 225.6
D 13 174 217291 959.03 927 896 225.6

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