ASTROSAT CZTI

Data Quality Report

Orbit 24205

Creation date: 2024-06-27T19:03:27.162714
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/AS1A07_160T05_9000003580_24205cztM0_level2.evt modeM0/AS1A07_160T05_9000003580_24205cztM0_level2_quad_clean.evt
Size (bytes)488,568,960103,651,200
Size465.9 MB 98.8 MB
Events in quadrant A3,359,195683,493
Events in quadrant B3,401,290685,936
Events in quadrant C3,607,630641,720
Events in quadrant D3,944,582632,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145181
B0145711
C0147331
D0161271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71201031.446629%
B71211191.671114%
C71211241.741328%
D7121731.025137%

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 7590 7120 0 0 0.00% 0.00%
B 7591 7121 1 1 0.01% 0.01%
C 7591 7121 0 0 0.00% 0.00%
D 7591 7122 8 8 0.11% 0.11%

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 11450 60.59 869 850 174.9
A 3 137 7825 39.87 869 850 174.9
A 0 226 7478 37.89 869 850 174.9
B 12 111 19813 114.83 862 839 165.2
B 11 111 17693 102.0 862 839 165.2
B 14 111 15796 90.52 862 839 165.2
C 7 247 239865 1258.07 821 826 190.0
C 14 238 133714 699.39 821 826 190.0
C 2 16 31539 161.64 821 826 190.0
D 8 195 355909 1751.6 836 811 202.7
D 7 238 210338 1033.54 836 811 202.7
D 12 218 190398 935.18 836 811 202.7

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