ASTROSAT CZTI

Data Quality Report

Orbit 06995

Creation date: 2024-06-27T15:14:14.532814
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/AS1T01_151T01_9000000960_06995cztM0_level2.evt modeM0/AS1T01_151T01_9000000960_06995cztM0_level2_quad_clean.evt
Size (bytes)495,685,440105,917,760
Size472.7 MB 101.0 MB
Events in quadrant A3,525,730677,840
Events in quadrant B3,756,614679,562
Events in quadrant C3,450,214666,427
Events in quadrant D3,758,938651,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158903
B0163572
C0157992
D0163392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7664670.874217%
B7664881.148225%
C7664270.352296%
D7664440.574113%

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 7919 7666 0 0 0.00% 0.00%
B 7919 7666 1 1 0.01% 0.01%
C 7919 7666 0 0 0.00% 0.00%
D 7919 7666 5 5 0.06% 0.07%

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 15 234 10645 52.58 909 888 185.6
A 0 226 8858 42.95 909 888 185.6
A 12 194 8460 40.8 909 888 185.6
B 0 214 91650 516.13 911 889 175.9
B 4 173 40573 225.67 911 889 175.9
B 15 85 25595 140.49 911 889 175.9
C 13 61 6900 29.26 881 888 205.5
C 8 128 4370 16.95 881 888 205.5
C 8 112 2938 9.98 881 888 205.5
D 8 195 256096 1165.25 890 859 219.0
D 14 34 44061 197.23 890 859 219.0
D 7 55 22812 100.22 890 859 219.0

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