ASTROSAT CZTI

Data Quality Report

Orbit 09251

Creation date: 2024-06-27T15:43:13.553521
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/AS1A03_091T02_9000001292_09251cztM0_level2.evt modeM0/AS1A03_091T02_9000001292_09251cztM0_level2_quad_clean.evt
Size (bytes)759,764,160105,361,920
Size724.6 MB 100.5 MB
Events in quadrant A5,375,768630,582
Events in quadrant B5,194,140639,290
Events in quadrant C6,770,085607,744
Events in quadrant D4,973,568600,934

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022664496
B022551513
C027931895
D022541534

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02144
B02142
C02146
D02144

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10279610.593443%
B10270770.749757%
C102385555.420981%
D10304760.737578%

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 12775 10396 12 12 0.09% 0.12%
B 12775 10398 1 1 0.01% 0.01%
C 12775 10394 498 498 3.90% 4.79%
D 12775 10405 40 40 0.31% 0.38%

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 8 5 416429 1629.75 1251 1225 254.8
A 15 174 68403 263.68 1251 1225 254.8
A 5 16 33774 127.76 1251 1225 254.8
B 0 219 122583 511.33 1254 1227 237.3
B 4 173 62131 256.62 1254 1227 237.3
B 0 214 56085 231.14 1254 1227 237.3
C 9 68 2039021 7399.42 1184 1188 275.4
C 14 234 106841 383.63 1184 1188 275.4
C 13 61 9014 28.42 1184 1188 275.4
D 2 136 183946 559.94 1198 1167 326.4
D 7 71 84404 254.99 1198 1167 326.4
D 1 52 56670 170.03 1198 1167 326.4

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