ASTROSAT CZTI

Data Quality Report

Orbit 18859

Creation date: 2024-06-27T17:55:44.879630
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/AS1T03_094T01_9000002816_18859cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18859cztM0_level2_quad_clean.evt
Size (bytes)504,924,48084,513,600
Size481.5 MB 80.6 MB
Events in quadrant A2,984,202555,139
Events in quadrant B3,172,524571,088
Events in quadrant C3,112,190537,050
Events in quadrant D5,624,719485,937

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122971
B0129971
C0126901
D0206291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5864520.886767%
B5864711.210778%
C5864781.330150%
D586498816.848568%

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 7174 5865 1 1 0.01% 0.02%
B 7174 5865 3 3 0.04% 0.05%
C 7174 5865 0 0 0.00% 0.00%
D 7174 5865 728 728 10.15% 12.41%

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 4 2 12042 73.07 768 754 154.5
A 11 29 9711 57.98 768 754 154.5
A 13 254 9615 57.36 768 754 154.5
B 7 220 126769 876.78 765 749 143.7
B 12 111 15862 105.15 765 749 143.7
B 4 216 13705 90.14 765 749 143.7
C 3 233 136848 806.6 728 734 168.8
C 14 238 114693 675.31 728 734 168.8
C 5 112 14080 79.09 728 734 168.8
D 7 238 2685044 16146.24 678 657 166.3
D 1 52 167981 1006.43 678 657 166.3
D 14 34 64841 386.06 678 657 166.3

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