ASTROSAT CZTI

Data Quality Report

Orbit 12705

Creation date: 2024-06-27T16:31:18.730895
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/AS1A04_174T01_9000001876_12705cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12705cztM0_level2_quad_clean.evt
Size (bytes)548,735,04094,112,640
Size523.3 MB 89.8 MB
Events in quadrant A3,265,132631,501
Events in quadrant B6,070,846542,376
Events in quadrant C3,497,199619,519
Events in quadrant D3,340,725599,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137223
B0222692
C0145402
D0141262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554771.174855%
B6554112017.088801%
C65541251.907232%
D6554941.434239%

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 7615 6556 0 0 0.00% 0.00%
B 7615 6556 823 823 10.81% 12.55%
C 7615 6556 73 73 0.96% 1.11%
D 7615 6556 29 29 0.38% 0.44%

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 8 15 13065 70.66 843 826 173.2
A 12 189 10426 55.43 843 826 173.2
A 0 226 7401 37.96 843 826 173.2
B 4 239 2480994 17038.09 760 744 145.6
B 3 64 392417 2690.6 760 744 145.6
B 4 81 76991 523.78 760 744 145.6
C 15 208 356361 1926.27 804 813 184.6
C 13 61 5952 27.84 804 813 184.6
C 8 222 2547 9.39 804 813 184.6
D 1 255 122373 569.75 801 788 213.4
D 8 195 33190 151.84 801 788 213.4
D 13 238 26739 121.61 801 788 213.4

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