ASTROSAT CZTI

Data Quality Report

Orbit 09054

Creation date: 2024-06-27T15:40:39.120846
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_046T01_9000001260_09054cztM0_level2.evt modeM0/AS1A03_046T01_9000001260_09054cztM0_level2_quad_clean.evt
Size (bytes)828,650,880168,151,680
Size790.3 MB 160.4 MB
Events in quadrant A7,460,2291,068,750
Events in quadrant B5,630,0481,084,886
Events in quadrant C5,288,4111,052,537
Events in quadrant D5,889,0511,041,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02542
D02546

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313071151
B025837650
C025557737
D0276541244

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121733512.883431%
B12245450.367497%
C12216300.245580%
D121581381.135055%

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 13938 12499 418 418 3.00% 3.34%
B 13938 12513 12 12 0.09% 0.10%
C 13938 12522 17 17 0.12% 0.14%
D 13938 12472 99 99 0.71% 0.79%

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 2079832 7435.13 1372 1343 279.5
A 5 16 52406 182.66 1372 1343 279.5
A 1 162 34834 119.8 1372 1343 279.5
B 4 80 44659 162.67 1393 1357 266.2
B 0 213 33423 120.46 1393 1357 266.2
B 0 229 30267 108.61 1393 1357 266.2
C 14 234 95010 304.56 1331 1336 307.6
C 13 61 10319 29.2 1331 1336 307.6
C 8 222 3731 7.79 1331 1336 307.6
D 2 14 541489 1560.98 1315 1279 346.1
D 1 52 122281 349.65 1315 1279 346.1
D 6 225 79579 226.25 1315 1279 346.1

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