ASTROSAT CZTI

Data Quality Report

Orbit 16951

Creation date: 2024-06-27T17:29:56.058215
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/AS1A05_206T01_9000002518_16951cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16951cztM0_level2_quad_clean.evt
Size (bytes)448,859,52099,570,240
Size428.1 MB 95.0 MB
Events in quadrant A2,968,489652,848
Events in quadrant B3,470,533662,978
Events in quadrant C3,050,600646,662
Events in quadrant D3,689,015626,375

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126481
B0140451
C0126091
D0148341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6111641.047292%
B6112951.554319%
C6112811.325262%
D61121943.174084%

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 7232 6113 6 6 0.08% 0.10%
B 7233 6114 18 18 0.25% 0.29%
C 7233 6114 0 0 0.00% 0.00%
D 7233 6114 121 121 1.67% 1.98%

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 15 174 56895 371.13 753 736 151.3
A 12 189 15484 97.46 753 736 151.3
A 0 226 7156 42.43 753 736 151.3
B 15 35 198105 1404.1 749 731 140.6
B 7 220 166714 1180.79 749 731 140.6
B 0 189 47868 335.33 749 731 140.6
C 14 238 112975 662.29 733 736 169.5
C 3 233 77054 450.33 733 736 169.5
C 13 61 5106 25.78 733 736 169.5
D 1 52 443470 2486.07 736 716 178.1
D 15 0 309085 1731.49 736 716 178.1
D 2 152 29886 163.79 736 716 178.1

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