ASTROSAT CZTI

Data Quality Report

Orbit 21276

Creation date: 2024-06-27T18:25:44.180113
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_037T01_9000003140_21276cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21276cztM0_level2_quad_clean.evt
Size (bytes)512,170,560108,270,720
Size488.4 MB 103.3 MB
Events in quadrant A3,458,835730,008
Events in quadrant B3,762,471731,541
Events in quadrant C3,537,623698,351
Events in quadrant D4,326,811681,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144542
B0154162
C0146153
D0170212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275941.498008%
B62751362.167331%
C62741632.598024%
D62743054.861332%

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 7525 6275 5 5 0.07% 0.08%
B 7525 6275 32 32 0.43% 0.51%
C 7524 6274 16 16 0.21% 0.26%
D 7524 6274 203 203 2.70% 3.24%

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 52632 298.41 881 867 173.5
A 9 143 9952 52.37 881 867 173.5
A 13 254 9661 50.7 881 867 173.5
B 0 189 137074 844.51 861 844 161.3
B 0 245 76031 466.09 861 844 161.3
B 0 190 67362 412.35 861 844 161.3
C 0 207 150807 789.97 824 831 189.9
C 14 238 131682 689.23 824 831 189.9
C 3 233 29826 152.72 824 831 189.9
D 13 174 615148 3025.48 843 820 203.1
D 1 52 295550 1451.51 843 820 203.1
D 13 153 53684 260.35 843 820 203.1

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