ASTROSAT CZTI

Data Quality Report

Orbit 17233

Creation date: 2024-06-27T17:33:53.903403
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/AS1A05_185T04_9000002548_17233cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17233cztM0_level2_quad_clean.evt
Size (bytes)757,031,040143,202,240
Size722.0 MB 136.6 MB
Events in quadrant A5,258,113905,789
Events in quadrant B5,467,362905,092
Events in quadrant C5,396,588869,555
Events in quadrant D6,021,726857,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235382
B0238102
C0235933
D0259992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115541641.419422%
B115542071.791587%
C115532001.731152%
D115532502.163940%

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 13089 11557 0 0 0.00% 0.00%
B 13089 11556 2 2 0.02% 0.02%
C 13088 11556 0 0 0.00% 0.00%
D 13088 11556 97 97 0.74% 0.84%

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 0 23 20007 66.99 1362 1331 278.8
A 0 226 12847 41.31 1362 1331 278.8
A 3 137 10154 31.65 1362 1331 278.8
B 6 36 41886 152.83 1362 1324 265.4
B 0 189 32839 118.74 1362 1324 265.4
B 12 111 32016 115.64 1362 1324 265.4
C 14 238 199513 646.42 1309 1317 306.6
C 3 233 87749 281.9 1309 1317 306.6
C 13 61 9487 26.65 1309 1317 306.6
D 13 189 278526 857.0 1327 1287 323.5
D 9 65 180948 555.37 1327 1287 323.5
D 10 70 159238 488.26 1327 1287 323.5

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