ASTROSAT CZTI

Data Quality Report

Orbit 14927

Creation date: 2024-06-27T17:01:25.349557
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/AS1A04_099T01_9000002204_14927cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14927cztM0_level2_quad_clean.evt
Size (bytes)491,662,08087,891,840
Size468.9 MB 83.8 MB
Events in quadrant A3,614,174552,160
Events in quadrant B3,674,968553,586
Events in quadrant C3,682,734530,684
Events in quadrant D3,427,343522,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151942
B0153122
C0152462
D0150862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72142213.063488%
B72142653.673413%
C72141852.564458%
D72141582.190186%

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 8835 7217 0 0 0.00% 0.00%
B 8835 7217 0 0 0.00% 0.00%
C 8835 7217 0 0 0.00% 0.00%
D 8835 7217 0 0 0.00% 0.00%

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 12 189 20496 103.64 931 911 189.0
A 0 226 8134 38.22 931 911 189.0
A 1 162 6841 31.38 931 911 189.0
B 0 229 24948 134.94 919 896 178.2
B 12 111 22150 119.24 919 896 178.2
B 0 85 20909 112.28 919 896 178.2
C 3 233 162498 779.48 894 901 207.3
C 7 247 20420 94.15 894 901 207.3
C 14 234 11334 50.32 894 901 207.3
D 2 234 24740 110.66 900 881 215.6
D 13 249 18925 83.69 900 881 215.6
D 14 226 8812 36.79 900 881 215.6

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