ASTROSAT CZTI

Data Quality Report

Orbit 07766

Creation date: 2024-06-27T15:23:43.126822
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_132T01_9000001068_07766cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07766cztM0_level2_quad_clean.evt
Size (bytes)1,160,308,800209,511,360
Size1.1 GB 199.8 MB
Events in quadrant A7,882,5931,293,309
Events in quadrant B8,518,7801,310,140
Events in quadrant C7,836,9191,312,974
Events in quadrant D9,736,9901,242,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03533641
B03679325
C03523739
D04083570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03502
B03500
C03500
D03500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172172301.335889%
B172243472.014631%
C172171390.807342%
D172153211.864653%

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 18280 17234 0 0 0.00% 0.00%
B 18280 17235 73 73 0.40% 0.42%
C 18279 17235 0 0 0.00% 0.00%
D 18280 17236 119 119 0.65% 0.69%

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 0 226 19260 41.4 2039 1991 417.2
A 12 194 18270 39.02 2039 1991 417.2
A 8 4 13806 28.32 2039 1991 417.2
B 0 229 193084 488.27 2049 2002 391.3
B 4 173 100923 252.77 2049 2002 391.3
B 4 239 69736 173.08 2049 2002 391.3
C 13 61 15618 29.2 1997 2007 466.1
C 8 128 13411 24.47 1997 2007 466.1
C 12 4 12408 22.32 1997 2007 466.1
D 2 152 1141002 2347.15 1980 1917 485.3
D 12 221 440544 903.82 1980 1917 485.3
D 1 52 394883 809.73 1980 1917 485.3

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