ASTROSAT CZTI

Data Quality Report

Orbit 25107

Creation date: 2024-06-27T19:13:55.890195
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/AS1C05_012T06_9000003674_25107cztM0_level2.evt modeM0/AS1C05_012T06_9000003674_25107cztM0_level2_quad_clean.evt
Size (bytes)1,002,156,480179,291,520
Size955.7 MB 171.0 MB
Events in quadrant A5,891,9961,164,640
Events in quadrant B6,254,2981,177,935
Events in quadrant C6,509,1391,118,062
Events in quadrant D10,820,7241,075,152

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261300
B0267800
C0269590
D0412980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129421150.888580%
B129431641.267094%
C129431941.498880%
D129435204.017616%

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 14152 12943 1 1 0.01% 0.01%
B 14153 12943 19 19 0.13% 0.15%
C 14153 12944 7 7 0.05% 0.05%
D 14153 12944 363 363 2.56% 2.80%

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 21930 67.26 1525 1493 303.9
A 3 137 14314 42.19 1525 1493 303.9
A 0 226 12932 37.64 1525 1493 303.9
B 3 209 90763 309.18 1523 1482 288.8
B 0 189 86723 295.19 1523 1482 288.8
B 5 172 64617 218.64 1523 1482 288.8
C 7 247 508241 1489.33 1455 1459 340.3
C 14 238 232874 680.08 1455 1459 340.3
C 0 207 62698 179.97 1455 1459 340.3
D 8 195 3144107 8292.33 1443 1410 379.0
D 1 52 1168007 3078.19 1443 1410 379.0
D 12 33 533254 1403.33 1443 1410 379.0

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