ASTROSAT CZTI

Data Quality Report

Orbit 38238

Creation date: 2024-06-27T21:50:08.566477
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_145T01_9000005370_38238cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38238cztM0_level2_quad_clean.evt
Size (bytes)715,587,840177,232,320
Size682.4 MB 169.0 MB
Events in quadrant A5,940,4141,204,642
Events in quadrant B5,247,8501,220,762
Events in quadrant C6,045,2971,147,861
Events in quadrant D8,418,3851,045,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241984
B0230363
C0247943
D0323363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10800270.250000%
B10800990.916667%
C108002091.935185%
D108004354.027778%

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 13574 10802 10 10 0.07% 0.09%
B 13574 10802 36 36 0.27% 0.33%
C 13574 10802 164 164 1.21% 1.52%
D 13574 10802 465 465 3.43% 4.30%

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 701922 2877.63 1201 1174 243.5
A 13 248 369162 1511.15 1201 1174 243.5
A 12 189 136630 556.25 1201 1174 243.5
B 5 172 322946 1402.79 1194 1160 229.4
B 5 184 91431 393.53 1194 1160 229.4
B 15 85 71918 308.46 1194 1160 229.4
C 9 236 875404 3232.82 1157 1163 270.4
C 15 214 446426 1646.52 1157 1163 270.4
C 2 16 84921 309.73 1157 1163 270.4
D 2 249 1813001 6443.18 1160 1129 281.2
D 10 203 960812 3412.72 1160 1129 281.2
D 12 233 350432 1242.15 1160 1129 281.2

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