ASTROSAT CZTI

Data Quality Report

Orbit 12051

Creation date: 2024-06-27T16:21:45.172508
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_085T02_9000001784_12051cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12051cztM0_level2_quad_clean.evt
Size (bytes)937,817,280132,531,840
Size894.4 MB 126.4 MB
Events in quadrant A5,803,002820,304
Events in quadrant B9,572,603771,718
Events in quadrant C5,584,328810,647
Events in quadrant D6,634,016784,546

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250453
B0360492
C0248852
D0268172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119531681.405505%
B11953134511.252405%
C119531110.928637%
D119532391.999498%

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 13499 11954 8 8 0.06% 0.07%
B 13499 11954 901 901 6.67% 7.54%
C 13499 11954 3 3 0.02% 0.03%
D 13499 11954 120 120 0.89% 1.00%

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 1 162 108160 366.08 1425 1395 291.6
A 1 178 47179 156.98 1425 1395 291.6
A 1 161 42589 141.25 1425 1395 291.6
B 4 239 1945619 7375.11 1375 1340 263.6
B 0 85 1780647 6749.33 1375 1340 263.6
B 15 204 220048 829.61 1375 1340 263.6
C 7 247 148277 454.17 1386 1391 323.4
C 14 234 36904 109.81 1386 1391 323.4
C 13 61 10021 26.68 1386 1391 323.4
D 8 195 693534 2101.13 1372 1330 329.4
D 1 52 489411 1481.53 1372 1330 329.4
D 13 104 139727 420.09 1372 1330 329.4

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