ASTROSAT CZTI

Data Quality Report

Orbit 21237

Creation date: 2024-06-27T18:25:17.061789
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_21237cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21237cztM0_level2_quad_clean.evt
Size (bytes)743,984,64089,841,600
Size709.5 MB 85.7 MB
Events in quadrant A3,320,230616,433
Events in quadrant B3,377,366621,306
Events in quadrant C3,244,060606,149
Events in quadrant D12,133,618405,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142332
B0144162
C0139782
D0406752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6752310.459123%
B6752550.814573%
C6752691.021919%
D6752314546.578791%

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 7527 6753 6 6 0.08% 0.09%
B 7527 6753 4 4 0.05% 0.06%
C 7527 6753 0 0 0.00% 0.00%
D 7527 6752 3143 3143 41.76% 46.55%

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 5 16 43890 257.05 830 812 167.6
A 11 47 31788 184.84 830 812 167.6
A 3 1 21193 121.62 830 812 167.6
B 0 190 37220 230.23 828 809 158.2
B 0 197 26777 164.2 828 809 158.2
B 0 229 19172 116.11 828 809 158.2
C 14 238 124736 662.44 796 799 187.1
C 0 10 18053 92.22 796 799 187.1
C 13 61 5742 26.42 796 799 187.1
D 1 239 7734036 60812.67 526 513 127.2
D 13 174 1229637 9665.23 526 513 127.2
D 7 238 851219 6689.54 526 513 127.2

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