ASTROSAT CZTI

Data Quality Report

Orbit 20220627_A11_049T03_9000005208_level2

Creation date: 2022-06-29T14:58:56.977381
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/AS1A11_049T03_9000005208cztM0_level2_bc.evt modeM0/AS1A11_049T03_9000005208cztM0_level2_quad_clean.evt
Size (bytes)1,309,962,240408,551,040
Size1.2 GB 389.6 MB
Events in quadrant A6,785,3132,739,336
Events in quadrant B8,474,6872,673,076
Events in quadrant C12,141,6702,575,360
Events in quadrant D10,407,5312,507,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576170
B0651360
C0749310
D0736100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27332440.160983%
B273324811.759842%
C2733211054.042880%
D2733212064.412410%

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 40928 27339 1 1 0.00% 0.00%
B 40928 27332 56 56 0.14% 0.20%
C 40928 27333 393 393 0.96% 1.44%
D 40928 27332 207 207 0.51% 0.76%

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 10 83 826273 2494.37 1496 1480 330.7
A 9 143 67938 200.98 1496 1480 330.7
A 13 254 46471 136.06 1496 1480 330.7
B 5 172 1296437 4435.25 1466 1440 292.0
B 5 255 658618 2250.78 1466 1440 292.0
B 0 189 235210 800.64 1466 1440 292.0
C 4 254 2469952 7745.09 1395 1387 318.7
C 0 10 2224907 6976.26 1395 1387 318.7
C 15 214 1101764 3452.42 1395 1387 318.7
D 13 249 1841926 5449.65 1431 1394 337.7
D 12 235 662440 1957.3 1431 1394 337.7
D 12 227 430791 1271.41 1431 1394 337.7

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