ASTROSAT CZTI

Data Quality Report

Orbit 35966

Creation date: 2024-06-27T21:20:39.324772
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/AS1T05_009T09_9000005148_35966cztM0_level2.evt modeM0/AS1T05_009T09_9000005148_35966cztM0_level2_quad_clean.evt
Size (bytes)614,211,84063,123,840
Size585.8 MB 60.2 MB
Events in quadrant A1,942,989490,380
Events in quadrant B11,059,519158,043
Events in quadrant C2,650,013496,324
Events in quadrant D2,662,523467,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086622
B0357801
C0105721
D0108691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A422180.189529%
B42214221100.000000%
C4221922.179578%
D42211724.074864%

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 5804 4222 0 0 0.00% 0.00%
B 5803 4220 4168 4168 71.82% 98.77%
C 5804 4222 83 83 1.43% 1.97%
D 5804 4222 137 137 2.36% 3.24%

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 103916 1083.9 468 458 95.4
A 15 169 12067 121.62 468 458 95.4
A 8 144 10306 103.17 468 458 95.4
B 5 31 3987185 116651.53 171 167 34.2
B 5 15 3828340 112004.07 171 167 34.2
B 5 14 2171401 63525.62 171 167 34.2
C 9 187 593898 5599.7 453 457 106.0
C 15 214 174179 1639.24 453 457 106.0
C 0 10 103490 972.22 453 457 106.0
D 2 250 327939 2987.96 448 435 109.6
D 10 118 140956 1282.03 448 435 109.6
D 12 227 104546 949.85 448 435 109.6

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