ASTROSAT CZTI

Data Quality Report

Orbit 06860

Creation date: 2024-06-27T15:12:28.508960
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/AS1A02_005T01_9000000948_06860cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06860cztM0_level2_quad_clean.evt
Size (bytes)250,977,60040,988,160
Size239.4 MB 39.1 MB
Events in quadrant A1,757,405250,858
Events in quadrant B1,809,134254,323
Events in quadrant C1,774,671251,940
Events in quadrant D2,028,577243,842

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073872
B075741
C073521
D082581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3371521.542569%
B3371581.720558%
C3371601.779887%
D3371722.135865%

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 4726 3372 2 2 0.04% 0.06%
B 4726 3372 4 4 0.08% 0.12%
C 4726 3372 4 4 0.08% 0.12%
D 4726 3372 16 16 0.34% 0.47%

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 13 251 52545 576.96 440 431 90.3
A 3 1 6307 65.05 440 431 90.3
A 13 248 5402 55.03 440 431 90.3
B 0 228 34492 400.56 442 434 85.0
B 0 219 27473 318.01 442 434 85.0
B 15 204 15416 176.2 442 434 85.0
C 9 16 45842 454.19 430 431 100.0
C 9 247 38113 376.88 430 431 100.0
C 9 68 7039 66.09 430 431 100.0
D 8 195 176946 1665.76 430 417 106.0
D 2 152 109812 1032.27 430 417 106.0
D 2 16 67658 634.5 430 417 106.0

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