ASTROSAT CZTI

Data Quality Report

Orbit 18753

Creation date: 2024-06-27T17:54:23.489974
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/AS1A05_156T01_9000002804_18753cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18753cztM0_level2_quad_clean.evt
Size (bytes)500,405,760111,047,040
Size477.2 MB 105.9 MB
Events in quadrant A3,628,578714,921
Events in quadrant B3,646,346724,223
Events in quadrant C3,635,640701,360
Events in quadrant D3,724,426690,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157222
B0157932
C0158442
D0165402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7654660.862294%
B7654971.267311%
C76541061.384897%
D7654740.966815%

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 9184 7656 0 0 0.00% 0.00%
B 9184 7656 1 1 0.01% 0.01%
C 9184 7656 5 5 0.05% 0.07%
D 9184 7656 20 20 0.22% 0.26%

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 15 192 53304 284.14 917 898 184.4
A 8 205 26850 140.71 917 898 184.4
A 13 254 11400 56.94 917 898 184.4
B 12 111 21689 117.99 915 893 176.3
B 11 111 19167 103.68 915 893 176.3
B 14 111 16277 87.28 915 893 176.3
C 14 238 136442 652.58 883 890 207.7
C 5 112 52944 250.6 883 890 207.7
C 13 61 6194 25.53 883 890 207.7
D 1 52 203458 932.67 890 863 217.2
D 13 168 69536 316.14 890 863 217.2
D 7 96 41448 186.84 890 863 217.2

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