ASTROSAT CZTI

Data Quality Report

Orbit 39715

Creation date: 2024-06-27T22:08:08.099527
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/AS1A12_022T01_9000005494_39715cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39715cztM0_level2_quad_clean.evt
Size (bytes)882,743,040177,739,200
Size841.8 MB 169.5 MB
Events in quadrant A6,436,0471,228,071
Events in quadrant B5,357,8391,269,053
Events in quadrant C12,600,8291,030,111
Events in quadrant D7,410,1471,074,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261714
B0237403
C0452563
D0299343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112591641.456612%
B11259860.763833%
C11259184416.378009%
D112595254.662936%

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 15313 11262 107 107 0.70% 0.95%
B 15313 11262 46 46 0.30% 0.41%
C 15313 11262 1520 1520 9.93% 13.50%
D 15313 11262 414 414 2.70% 3.68%

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 10 83 839876 3351.14 1240 1214 250.3
A 15 174 711000 2836.18 1240 1214 250.3
A 13 248 40474 156.88 1240 1214 250.3
B 5 172 256931 1075.61 1238 1200 237.8
B 5 255 69213 286.06 1238 1200 237.8
B 0 190 49693 203.96 1238 1200 237.8
C 9 187 6365195 24368.47 1127 1136 261.2
C 15 208 1351134 5169.25 1127 1136 261.2
C 15 214 433254 1654.61 1127 1136 261.2
D 12 227 1831010 6257.07 1194 1160 292.4
D 2 250 253328 862.27 1194 1160 292.4
D 13 171 231325 787.04 1194 1160 292.4

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