ASTROSAT CZTI

Data Quality Report

Orbit 02208

Creation date: 2024-06-27T14:15:17.403878
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/AS1T01_072T04_9000000342_02208cztM0_level2.evt modeM0/AS1T01_072T04_9000000342_02208cztM0_level2_quad_clean.evt
Size (bytes)843,180,48074,263,680
Size804.1 MB 70.8 MB
Events in quadrant A3,362,832500,006
Events in quadrant B3,185,445510,433
Events in quadrant C15,622,001273,564
Events in quadrant D2,898,292483,218

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141491
B0140201
C05109218
D0139241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6878630.915964%
B6878670.974120%
C68766876100.000000%
D6878400.581564%

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 7603 6878 0 0 0.00% 0.00%
B 7603 6879 0 0 0.00% 0.00%
C 7603 6878 6094 6094 80.15% 88.60%
D 7603 6879 2 2 0.03% 0.03%

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 15 171 334168 2076.32 778 759 160.6
A 10 2 13579 79.84 778 759 160.6
A 15 47 10799 62.52 778 759 160.6
B 4 158 59795 384.35 792 770 153.6
B 15 85 29326 185.95 792 770 153.6
B 5 175 14031 86.35 792 770 153.6
C 0 187 11601238 75188.76 508 499 154.3
C 14 223 517432 3350.44 508 499 154.3
C 12 180 336724 2179.2 508 499 154.3
D 13 238 15612 83.25 748 729 178.8
D 15 194 13802 73.12 748 729 178.8
D 10 149 13205 69.78 748 729 178.8

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