ASTROSAT CZTI

Data Quality Report

Orbit 26665

Creation date: 2024-06-27T19:31:33.977115
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/AS1A09_145T01_9000003848_26665cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26665cztM0_level2_quad_clean.evt
Size (bytes)650,373,12072,293,760
Size620.2 MB 68.9 MB
Events in quadrant A3,660,295454,291
Events in quadrant B3,469,419456,363
Events in quadrant C3,491,635439,861
Events in quadrant D8,625,324374,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146500
B0139980
C0140760
D0301460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649891.338547%
B6650861.293233%
C66501101.654135%
D6650196129.488722%

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 7609 6650 0 0 0.00% 0.00%
B 7610 6651 1 1 0.01% 0.02%
C 7610 6650 6 6 0.08% 0.09%
D 7610 6651 1307 1307 17.17% 19.65%

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 0 13 268503 1520.11 877 864 176.1
A 13 254 11429 60.01 877 864 176.1
A 12 189 8811 45.14 877 864 176.1
B 3 112 36781 218.32 865 847 164.6
B 10 245 23610 138.3 865 847 164.6
B 12 111 19423 112.86 865 847 164.6
C 14 238 133974 682.13 835 845 195.2
C 2 16 72237 365.8 835 845 195.2
C 3 233 21504 105.85 835 845 195.2
D 7 80 3995782 22032.03 740 721 181.3
D 1 52 1124736 6198.74 740 721 181.3
D 2 250 568253 3129.84 740 721 181.3

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