ASTROSAT CZTI

Data Quality Report

Orbit 24793

Creation date: 2024-06-27T19:09:56.720597
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_197T01_9000003626_24793cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24793cztM0_level2_quad_clean.evt
Size (bytes)579,525,120100,471,680
Size552.7 MB 95.8 MB
Events in quadrant A3,245,249684,974
Events in quadrant B7,427,085592,944
Events in quadrant C3,281,264655,965
Events in quadrant D3,149,364648,041

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136282
B0264602
C0138422
D0136832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6596190.288053%
B6596162224.590661%
C6596520.788357%
D6596100.151607%

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 7806 6597 0 0 0.00% 0.00%
B 7806 6597 1403 1403 17.97% 21.27%
C 7806 6597 2 2 0.03% 0.03%
D 7806 6597 1 1 0.01% 0.02%

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 13 254 9281 50.71 842 826 166.7
A 3 137 7435 39.63 842 826 166.7
A 0 226 7029 37.2 842 826 166.7
B 3 64 4455223 33580.62 702 685 132.7
B 0 189 193006 1449.82 702 685 132.7
B 12 111 15832 114.19 702 685 132.7
C 14 238 128333 692.28 798 803 184.2
C 2 16 26343 138.64 798 803 184.2
C 10 91 7876 38.39 798 803 184.2
D 1 52 37601 190.77 809 786 193.0
D 2 244 31936 161.41 809 786 193.0
D 8 195 24812 124.5 809 786 193.0

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