ASTROSAT CZTI

Data Quality Report

Orbit 33460

Creation date: 2024-06-27T20:47:27.472684
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/AS1T04_072T01_9000004780_33460cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33460cztM0_level2_quad_clean.evt
Size (bytes)950,132,160133,470,720
Size906.1 MB 127.3 MB
Events in quadrant A5,028,276850,706
Events in quadrant B6,692,067837,272
Events in quadrant C6,093,475833,418
Events in quadrant D10,234,649775,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220784
B0267013
C0247193
D0376283

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10770250.232126%
B107704454.131848%
C107702272.107707%
D107705665.255339%

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 13545 10772 16 16 0.12% 0.15%
B 13545 10772 320 320 2.36% 2.97%
C 13545 10772 171 171 1.26% 1.59%
D 13545 10772 485 485 3.58% 4.50%

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 9 143 144670 576.02 1247 1221 249.0
A 13 6 21789 82.59 1247 1221 249.0
A 13 254 19325 72.7 1247 1221 249.0
B 5 172 1415622 6055.51 1221 1187 233.6
B 0 230 122546 519.56 1221 1187 233.6
B 5 255 54249 227.17 1221 1187 233.6
C 1 23 544581 1970.44 1197 1206 275.8
C 15 214 457331 1654.05 1197 1206 275.8
C 0 10 229438 827.64 1197 1206 275.8
D 8 195 3797782 11895.14 1173 1149 319.2
D 1 52 619215 1936.45 1173 1149 319.2
D 2 250 341671 1066.88 1173 1149 319.2

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