ASTROSAT CZTI

Data Quality Report

Orbit 14606

Creation date: 2024-06-27T16:57:24.754197
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/AS1G08_055T02_9000002148_14606cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14606cztM0_level2_quad_clean.evt
Size (bytes)248,978,88058,415,040
Size237.4 MB 55.7 MB
Events in quadrant A2,994,052382,866
Events in quadrant B1,400,068400,362
Events in quadrant C1,540,336396,657
Events in quadrant D1,413,773388,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109171
B060501
C062781
D060731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2810501.779359%
B281070.249110%
C281040.142349%
D2810110.391459%

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 2811 2811 3 3 0.11% 0.11%
B 2811 2811 3 3 0.11% 0.11%
C 2811 2811 0 0 0.00% 0.00%
D 2811 2811 2 2 0.07% 0.07%

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 1496127 21484.82 338 332 69.6
A 0 226 90568 1296.1 338 332 69.6
A 1 162 39546 563.25 338 332 69.6
B 0 205 23389 350.68 345 337 65.7
B 12 111 7585 110.26 345 337 65.7
B 4 80 7009 101.5 345 337 65.7
C 3 233 203250 2534.35 343 346 80.1
C 13 61 2527 27.24 343 346 80.1
C 3 202 803 5.71 343 346 80.1
D 10 199 58061 716.32 336 330 80.6
D 12 110 43996 541.81 336 330 80.6
D 2 152 14947 181.37 336 330 80.6

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