ASTROSAT CZTI

Data Quality Report

Orbit 28959

Creation date: 2024-06-27T19:58:31.766017
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_048T03_9000004154_28959cztM0_level2.evt modeM0/AS1A10_048T03_9000004154_28959cztM0_level2_quad_clean.evt
Size (bytes)836,291,520133,444,800
Size797.5 MB 127.3 MB
Events in quadrant A5,053,164838,395
Events in quadrant B5,866,616849,295
Events in quadrant C5,247,744820,184
Events in quadrant D8,440,450797,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220512
B0242972
C0222932
D0323962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10635940.883874%
B106363643.422339%
C106362792.623167%
D106364274.014667%

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 12360 10637 0 0 0.00% 0.00%
B 12361 10638 197 197 1.59% 1.85%
C 12361 10638 0 0 0.00% 0.00%
D 12361 10638 282 282 2.28% 2.65%

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 19988 71.47 1300 1271 261.9
A 1 113 15325 53.67 1300 1271 261.9
A 3 137 13207 45.58 1300 1271 261.9
B 10 245 732906 2990.56 1280 1250 244.7
B 0 229 53019 211.6 1280 1250 244.7
B 12 111 30918 121.26 1280 1250 244.7
C 14 238 252784 854.82 1249 1258 294.2
C 14 254 78119 261.21 1249 1258 294.2
C 2 114 25541 82.53 1249 1258 294.2
D 8 195 1830524 6117.79 1250 1217 299.0
D 1 52 1260535 4211.56 1250 1217 299.0
D 5 233 480045 1601.35 1250 1217 299.0

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