ASTROSAT CZTI

Data Quality Report

Orbit 09614

Creation date: 2024-06-27T15:48:24.859066
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/AS1G05_238T01_9000001364_09614cztM0_level2.evt modeM0/AS1G05_238T01_9000001364_09614cztM0_level2_quad_clean.evt
Size (bytes)681,419,520114,310,080
Size649.9 MB 109.0 MB
Events in quadrant A4,739,801716,247
Events in quadrant B4,966,199707,731
Events in quadrant C4,623,610689,015
Events in quadrant D5,641,521668,511

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237803443
B0246213724
C0236963423
D0268073786

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023438
B023436
C023436
D023426

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98111811.844868%
B98042172.213382%
C98221531.557728%
D97611992.038726%

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 12962 10394 1 1 0.01% 0.01%
B 12962 10384 9 9 0.07% 0.09%
C 12962 10382 0 0 0.00% 0.00%
D 12962 10346 44 44 0.34% 0.43%

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 0 226 11215 40.52 1228 1203 247.1
A 12 194 10021 35.69 1228 1203 247.1
A 13 248 5583 17.73 1228 1203 247.1
B 4 80 93190 390.73 1221 1192 235.4
B 0 214 69821 291.48 1221 1192 235.4
B 0 219 31036 126.75 1221 1192 235.4
C 13 61 8793 27.58 1182 1188 275.7
C 8 128 5723 16.45 1182 1188 275.7
C 14 234 4304 11.3 1182 1188 275.7
D 13 122 536384 1847.47 1174 1147 289.7
D 12 227 172322 590.84 1174 1147 289.7
D 6 240 149468 511.96 1174 1147 289.7

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