ASTROSAT CZTI

Data Quality Report

Orbit 06456

Creation date: 2024-06-27T15:07:27.715578
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_191T01_9000000854_06456cztM0_level2.evt modeM0/AS1A02_191T01_9000000854_06456cztM0_level2_quad_clean.evt
Size (bytes)392,391,36084,700,800
Size374.2 MB 80.8 MB
Events in quadrant A2,940,764545,334
Events in quadrant B2,873,079560,974
Events in quadrant C2,726,328529,672
Events in quadrant D2,926,394501,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128922
B0125971
C0125341
D0130481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61261252.040483%
B6126671.093699%
C6126170.277506%
D6126671.093699%

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 7346 6127 3 3 0.04% 0.05%
B 7346 6127 0 0 0.00% 0.00%
C 7346 6127 0 0 0.00% 0.00%
D 7346 6127 32 32 0.44% 0.52%

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 15 239 114476 774.64 727 712 146.9
A 8 15 17325 113.12 727 712 146.9
A 15 236 8528 53.22 727 712 146.9
B 15 204 14616 100.55 732 715 138.3
B 12 111 14055 96.49 732 715 138.3
B 15 255 13638 93.47 732 715 138.3
C 1 16 8534 48.91 693 695 160.3
C 14 67 5724 31.38 693 695 160.3
C 13 61 5463 29.75 693 695 160.3
D 2 152 152304 897.59 691 668 168.9
D 2 63 51178 298.99 691 668 168.9
D 13 105 47968 279.99 691 668 168.9

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