ASTROSAT CZTI

Data Quality Report

Orbit 26634

Creation date: 2024-06-27T19:31:13.244601
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/AS1A09_145T01_9000003848_26634cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26634cztM0_level2_quad_clean.evt
Size (bytes)575,072,64087,739,200
Size548.4 MB 83.7 MB
Events in quadrant A3,569,002572,508
Events in quadrant B4,356,023564,476
Events in quadrant C3,735,009545,373
Events in quadrant D5,323,935529,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143990
B0174210
C0151350
D0202410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6393691.079305%
B63942013.143572%
C63941051.642165%
D63943014.707538%

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 7713 6395 1 1 0.01% 0.02%
B 7714 6396 96 96 1.24% 1.50%
C 7714 6396 0 0 0.00% 0.00%
D 7714 6396 218 218 2.83% 3.41%

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 13 27896 149.08 919 907 181.0
A 13 254 10746 54.35 919 907 181.0
A 0 226 8115 39.81 919 907 181.0
B 10 245 430842 2601.91 891 874 165.3
B 0 189 321314 1939.11 891 874 165.3
B 3 112 59343 353.82 891 874 165.3
C 3 233 211001 1055.76 865 874 199.0
C 14 238 143046 714.33 865 874 199.0
C 15 208 6360 27.56 865 874 199.0
D 1 52 855848 4046.51 876 855 211.3
D 7 80 657949 3109.89 876 855 211.3
D 12 233 319252 1506.91 876 855 211.3

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