ASTROSAT CZTI

Data Quality Report

Orbit 31575

Creation date: 2024-06-27T20:30:08.184191
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/AS1A10_082T10_9000004602_31575cztM0_level2.evt modeM0/AS1A10_082T10_9000004602_31575cztM0_level2_quad_clean.evt
Size (bytes)633,360,960111,384,000
Size604.0 MB 106.2 MB
Events in quadrant A3,676,559716,615
Events in quadrant B6,499,138717,072
Events in quadrant C4,250,761697,834
Events in quadrant D4,216,293688,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163542
B0251582
C0176402
D0177832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79602703.391960%
B79604345.452261%
C79603254.082915%
D79593113.907526%

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 8568 7962 0 0 0.00% 0.00%
B 8568 7962 30 30 0.35% 0.38%
C 8568 7961 0 0 0.00% 0.00%
D 8566 7960 78 78 0.91% 0.98%

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 13 254 14487 70.44 951 928 192.5
A 3 137 10070 47.49 951 928 192.5
A 0 226 7994 36.71 951 928 192.5
B 6 159 2165886 11924.95 938 911 181.5
B 4 80 484545 2663.91 938 911 181.5
B 0 190 82057 446.96 938 911 181.5
C 3 233 493854 2327.93 908 911 211.8
C 14 238 147509 692.31 908 911 211.8
C 2 114 18544 83.27 908 911 211.8
D 8 195 275839 1273.99 912 886 215.8
D 12 233 228638 1055.29 912 886 215.8
D 12 218 92860 426.16 912 886 215.8

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