ASTROSAT CZTI

Data Quality Report

Orbit 03159

Creation date: 2024-06-27T14:25:22.181629
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/AS1G05_218T02_9000000434_03159cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03159cztM0_level2_quad_clean.evt
Size (bytes)539,714,880108,302,400
Size514.7 MB 103.3 MB
Events in quadrant A3,603,262693,881
Events in quadrant B3,853,360703,682
Events in quadrant C4,207,066677,638
Events in quadrant D4,151,249661,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164102
B0168191
C0181781
D0180801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78122713.469022%
B78122142.739375%
C78123314.237071%
D78123204.096262%

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 7832 7813 7 7 0.09% 0.09%
B 7832 7813 9 9 0.11% 0.12%
C 7832 7813 124 124 1.58% 1.59%
D 7832 7813 104 104 1.33% 1.33%

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 0 149 37896 198.76 905 881 186.2
A 14 238 36253 189.93 905 881 186.2
A 0 199 16611 84.46 905 881 186.2
B 4 81 97888 545.6 918 895 177.8
B 14 167 56254 311.4 918 895 177.8
B 0 219 45719 252.14 918 895 177.8
C 14 223 624068 3057.74 875 873 203.8
C 15 208 68597 332.29 875 873 203.8
C 6 80 43943 211.33 875 873 203.8
D 2 136 297246 1379.85 879 849 214.8
D 13 239 261110 1211.62 879 849 214.8
D 5 233 58283 267.38 879 849 214.8

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