ASTROSAT CZTI

Data Quality Report

Orbit 15935

Creation date: 2024-06-27T17:15:18.295357
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_104T03_9000002348_15935cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15935cztM0_level2_quad_clean.evt
Size (bytes)465,744,960110,361,600
Size444.2 MB 105.2 MB
Events in quadrant A3,404,725746,926
Events in quadrant B3,537,137749,276
Events in quadrant C3,401,451703,084
Events in quadrant D3,323,772693,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143673
B0146152
C0142292
D0142082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64501452.248062%
B64501502.325581%
C64501582.449612%
D64501292.000000%

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 8986 6451 0 0 0.00% 0.00%
B 8986 6452 1 1 0.01% 0.02%
C 8986 6451 0 0 0.00% 0.00%
D 8986 6452 16 16 0.18% 0.25%

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 15 239 25504 138.76 879 864 177.6
A 0 226 8069 40.57 879 864 177.6
A 12 194 6569 32.13 879 864 177.6
B 4 216 74354 447.7 868 850 164.2
B 3 209 24779 145.75 868 850 164.2
B 12 111 17622 102.16 868 850 164.2
C 14 238 128724 675.44 821 826 189.4
C 3 233 66851 348.68 821 826 189.4
C 13 61 6002 27.33 821 826 189.4
D 15 0 39783 190.36 845 821 204.7
D 2 120 29029 137.82 845 821 204.7
D 2 234 27799 131.81 845 821 204.7

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