ASTROSAT CZTI

Data Quality Report

Orbit 18741

Creation date: 2024-06-27T17:54:07.633186
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_072T04_9000002802_18741cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18741cztM0_level2_quad_clean.evt
Size (bytes)737,470,080144,843,840
Size703.3 MB 138.1 MB
Events in quadrant A5,786,308912,318
Events in quadrant B5,572,646929,698
Events in quadrant C5,221,813897,372
Events in quadrant D5,009,066887,047

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244422
B0233992
C0226402
D0225002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10984770.701020%
B109851321.201639%
C109851121.019572%
D10985540.491579%

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 12924 10986 0 0 0.00% 0.00%
B 12925 10987 18 18 0.14% 0.16%
C 12925 10987 6 6 0.05% 0.05%
D 12925 10987 2 2 0.02% 0.02%

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 15 192 616528 2294.91 1331 1302 268.1
A 11 29 23044 81.1 1331 1302 268.1
A 14 111 17988 62.24 1331 1302 268.1
B 10 245 132428 524.89 1320 1288 249.8
B 4 216 70657 277.65 1320 1288 249.8
B 0 197 52031 203.1 1320 1288 249.8
C 14 238 197585 666.08 1268 1275 294.7
C 3 233 54547 180.75 1268 1275 294.7
C 5 112 24522 78.88 1268 1275 294.7
D 13 168 87481 274.4 1294 1257 314.2
D 2 234 47586 147.44 1294 1257 314.2
D 7 96 12816 36.79 1294 1257 314.2

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