ASTROSAT CZTI

Data Quality Report

Orbit 22091

Creation date: 2024-06-27T18:36:35.973302
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/AS1T03_146T01_9000003272_22091cztM0_level2.evt modeM0/AS1T03_146T01_9000003272_22091cztM0_level2_quad_clean.evt
Size (bytes)574,381,44098,055,360
Size547.8 MB 93.5 MB
Events in quadrant A3,450,650640,362
Events in quadrant B3,613,882648,961
Events in quadrant C3,377,841611,523
Events in quadrant D6,481,176583,346

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146162
B0150161
C0143871
D0243301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6968711.018944%
B6969781.119242%
C6969901.291433%
D69693194.577414%

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 7758 6969 14 14 0.18% 0.20%
B 7759 6970 18 18 0.23% 0.26%
C 7759 6970 1 1 0.01% 0.01%
D 7759 6970 231 231 2.98% 3.31%

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 15 174 52041 289.44 875 858 176.8
A 14 111 12875 67.95 875 858 176.8
A 13 254 11993 62.97 875 858 176.8
B 3 64 52735 310.84 872 851 166.9
B 0 228 46377 272.75 872 851 166.9
B 0 190 27371 158.88 872 851 166.9
C 14 238 130797 668.11 829 837 194.5
C 10 22 8544 39.62 829 837 194.5
C 13 61 5903 26.04 829 837 194.5
D 1 52 2940222 14262.89 838 813 206.1
D 7 238 139171 671.35 838 813 206.1
D 2 16 86971 418.06 838 813 206.1

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