ASTROSAT CZTI

Data Quality Report

Orbit 35402

Creation date: 2022-09-12T18:11:44.747893
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/AS1T05_022T01_9000005070_35402cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35402cztM0_level2_quad_clean.evt
Size (bytes)656,792,64081,573,120
Size626.4 MB 77.8 MB
Events in quadrant A2,615,125574,253
Events in quadrant B6,888,029535,485
Events in quadrant C3,955,948535,231
Events in quadrant D6,064,827444,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112993
B0241942
C0149172
D0217122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A542060.110701%
B5420142426.273063%
C54204929.077491%
D5420125723.191882%

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 7122 5421 1 1 0.01% 0.02%
B 7122 5421 1099 1099 15.43% 20.27%
C 7122 5421 397 397 5.57% 7.32%
D 7122 5421 965 965 13.55% 17.80%

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 10 83 125990 971.78 636 621 129.0
A 13 6 16982 126.82 636 621 129.0
A 13 254 8732 62.87 636 621 129.0
B 4 251 2333925 21242.9 560 545 109.8
B 5 14 539798 4909.31 560 545 109.8
B 5 31 526071 4784.35 560 545 109.8
C 0 207 1062571 7608.67 596 600 139.6
C 0 10 329061 2353.31 596 600 139.6
C 15 214 214935 1535.64 596 600 139.6
D 7 80 2489720 18701.08 539 524 133.1
D 13 249 715515 5371.66 539 524 133.1
D 8 195 183867 1377.44 539 524 133.1

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