ASTROSAT CZTI

Data Quality Report

Orbit 11251

Creation date: 2024-06-27T16:10:20.799489
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/AS1T01_202T01_9000001640_11251cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11251cztM0_level2_quad_clean.evt
Size (bytes)599,950,080108,046,080
Size572.2 MB 103.0 MB
Events in quadrant A3,824,692721,905
Events in quadrant B3,936,587728,386
Events in quadrant C5,670,184687,821
Events in quadrant D4,291,638674,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156153
B0158902
C0212342
D0171632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65743475.278369%
B65743535.369638%
C6574104615.911165%
D65744837.347125%

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 6649 6576 84 84 1.26% 1.28%
B 6649 6576 61 61 0.92% 0.93%
C 6649 6576 569 569 8.56% 8.65%
D 6649 6576 266 266 4.00% 4.05%

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 14 238 334073 1835.99 813 796 181.5
A 8 5 131908 722.28 813 796 181.5
A 1 162 52240 283.4 813 796 181.5
B 4 239 522466 3168.15 817 800 164.7
B 11 51 101686 612.69 817 800 164.7
B 15 204 46981 280.46 817 800 164.7
C 4 254 2699396 14946.35 756 766 180.6
C 4 238 9870 50.42 756 766 180.6
C 8 222 6578 32.19 756 766 180.6
D 13 152 695456 3493.97 779 756 198.8
D 1 52 161049 806.19 779 756 198.8
D 8 195 112370 561.36 779 756 198.8

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