ASTROSAT CZTI

Data Quality Report

Orbit 14909

Creation date: 2024-06-27T17:01:12.559862
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_099T01_9000002204_14909cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14909cztM0_level2_quad_clean.evt
Size (bytes)492,471,36065,511,360
Size469.7 MB 62.5 MB
Events in quadrant A3,322,505399,724
Events in quadrant B4,449,384393,442
Events in quadrant C3,309,210385,042
Events in quadrant D3,416,470376,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133763
B0169522
C0132702
D0138442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61421011.644415%
B61423946.414849%
C6142721.172257%
D6142931.514165%

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 7443 6144 0 0 0.00% 0.00%
B 7443 6144 161 161 2.16% 2.62%
C 7443 6144 0 0 0.00% 0.00%
D 7443 6144 29 29 0.39% 0.47%

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 11 29 14646 80.76 854 839 171.0
A 3 1 13888 76.33 854 839 171.0
A 0 226 7734 40.33 854 839 171.0
B 10 16 775299 4991.47 828 810 155.2
B 3 64 407390 2620.35 828 810 155.2
B 0 229 25403 158.5 828 810 155.2
C 3 233 140328 749.74 811 817 186.1
C 13 61 5717 26.33 811 817 186.1
C 0 207 3397 13.86 811 817 186.1
D 7 223 160840 830.94 812 797 192.6
D 7 254 102430 527.67 812 797 192.6
D 10 70 34976 177.46 812 797 192.6

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