ASTROSAT CZTI

Data Quality Report

Orbit 23895

Creation date: 2024-06-27T18:59:50.618550
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/AS1A07_142T01_9000003540_23895cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23895cztM0_level2_quad_clean.evt
Size (bytes)823,867,200140,189,760
Size785.7 MB 133.7 MB
Events in quadrant A5,446,332896,565
Events in quadrant B5,625,057906,397
Events in quadrant C5,555,719855,997
Events in quadrant D7,581,556827,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230252
B0234552
C0232772
D0297722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10967720.656515%
B10968890.811451%
C109681411.285558%
D109684434.039023%

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 13172 10968 0 0 0.00% 0.00%
B 13173 10970 3 3 0.02% 0.03%
C 13173 10969 3 3 0.02% 0.03%
D 13173 10970 214 214 1.62% 1.95%

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 17481 57.27 1411 1382 281.1
A 0 226 12506 39.57 1411 1382 281.1
A 3 137 11944 37.57 1411 1382 281.1
B 15 33 99724 378.95 1391 1360 259.6
B 12 111 31137 114.72 1391 1360 259.6
B 11 111 27650 101.28 1391 1360 259.6
C 14 238 215241 695.1 1336 1347 307.7
C 0 10 125883 404.71 1336 1347 307.7
C 7 247 10050 28.28 1336 1347 307.7
D 12 218 1157954 3540.85 1351 1313 326.7
D 8 195 883125 2699.51 1351 1313 326.7
D 12 250 126612 383.58 1351 1313 326.7

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