ASTROSAT CZTI

Data Quality Report

Orbit 28275

Creation date: 2024-06-27T19:49:56.192437
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/AS1A10_067T01_9000004076_28275cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28275cztM0_level2_quad_clean.evt
Size (bytes)562,896,00079,361,280
Size536.8 MB 75.7 MB
Events in quadrant A3,526,376491,786
Events in quadrant B4,375,405485,506
Events in quadrant C3,508,296466,866
Events in quadrant D5,145,688454,105

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150990
B0174890
C0149210
D0201320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72491051.448476%
B72502763.806897%
C72501291.779310%
D72504366.013793%

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 7534 7251 0 0 0.00% 0.00%
B 7535 7251 127 127 1.69% 1.75%
C 7535 7251 2 2 0.03% 0.03%
D 7535 7252 297 297 3.94% 4.10%

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 15 169 50092 272.57 889 869 180.6
A 5 98 36901 199.52 889 869 180.6
A 13 254 12531 64.58 889 869 180.6
B 10 245 797792 4685.94 870 845 170.1
B 15 32 119266 696.3 870 845 170.1
B 12 111 21452 121.17 870 845 170.1
C 14 238 133185 657.32 847 855 201.3
C 3 233 57863 283.18 847 855 201.3
C 8 128 9929 45.07 847 855 201.3
D 8 195 879981 4352.31 845 820 202.0
D 1 52 788749 3900.66 845 820 202.0
D 12 250 116584 573.09 845 820 202.0

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