ASTROSAT CZTI

Data Quality Report

Orbit 35422

Creation date: 2022-04-20T20:18:09.481642
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_097T07_9000005072_35422cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35422cztM0_level2_quad_clean.evt
Size (bytes)525,611,52044,605,440
Size501.3 MB 42.5 MB
Events in quadrant A2,507,402270,962
Events in quadrant B6,733,302230,878
Events in quadrant C3,008,486261,087
Events in quadrant D3,338,783244,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101613
B0233832
C0116782
D0130172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487250.102627%
B4872130726.826765%
C48721322.709360%
D48722384.885057%

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 7024 4873 0 0 0.00% 0.00%
B 7024 4873 941 941 13.40% 19.31%
C 7024 4872 102 102 1.45% 2.09%
D 7024 4872 186 186 2.65% 3.82%

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 123770 1005.39 612 602 122.5
A 13 6 16860 132.71 612 602 122.5
A 13 254 7317 54.81 612 602 122.5
B 4 251 2529944 23977.03 554 542 105.5
B 5 236 1331637 12617.89 554 542 105.5
B 5 172 176292 1665.99 554 542 105.5
C 0 10 345064 2541.2 582 587 135.6
C 15 214 201857 1484.76 582 587 135.6
C 0 207 175165 1287.86 582 587 135.6
D 13 249 414663 2936.88 571 556 141.0
D 7 80 365576 2588.75 571 556 141.0
D 8 195 139325 984.16 571 556 141.0

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