ASTROSAT CZTI

Data Quality Report

Orbit 28071

Creation date: 2024-06-27T19:47:44.496902
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/AS1A10_073T01_9000004056_28071cztM0_level2.evt modeM0/AS1A10_073T01_9000004056_28071cztM0_level2_quad_clean.evt
Size (bytes)699,871,680131,345,280
Size667.4 MB 125.3 MB
Events in quadrant A3,306,843930,977
Events in quadrant B4,789,539886,194
Events in quadrant C5,779,699845,942
Events in quadrant D6,850,754830,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143010
B0188680
C0218840
D0250850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6943430.619329%
B69446499.346198%
C69444606.624424%
D69446829.821429%

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 7188 6944 0 0 0.00% 0.00%
B 7189 6945 375 375 5.22% 5.40%
C 7189 6945 180 180 2.50% 2.59%
D 7189 6945 597 597 8.30% 8.60%

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 45152 262.98 839 821 168.6
A 12 96 19543 111.06 839 821 168.6
A 13 254 12437 68.91 839 821 168.6
B 10 245 1550689 10296.61 802 781 150.5
B 4 200 25129 161.75 802 781 150.5
B 4 52 19563 124.78 802 781 150.5
C 3 233 2573278 14056.07 785 788 183.0
C 14 238 125795 683.04 785 788 183.0
C 15 208 20157 105.83 785 788 183.0
D 1 52 2545459 13650.79 788 768 186.4
D 8 195 787872 4222.36 788 768 186.4
D 2 250 259384 1387.33 788 768 186.4

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