ASTROSAT CZTI

Data Quality Report

Orbit 22665

Creation date: 2024-06-27T18:44:11.438160
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/AS1A08_007T01_9000003362_22665cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22665cztM0_level2_quad_clean.evt
Size (bytes)1,935,555,840347,120,640
Size1.8 GB 331.0 MB
Events in quadrant A12,108,3742,242,105
Events in quadrant B13,409,3432,263,030
Events in quadrant C12,342,2592,185,033
Events in quadrant D19,062,9912,094,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05140
B05140
C05140
D05140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519645
B0558175
C0524275
D0734375

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251301010.401910%
B251312961.177828%
C251312781.106203%
D2513116166.430305%

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 29955 25135 0 0 0.00% 0.00%
B 29956 25136 131 131 0.44% 0.52%
C 29956 25136 9 9 0.03% 0.04%
D 29956 25136 1248 1248 4.17% 4.96%

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 13 254 44172 65.84 3131 3068 624.3
A 14 235 28393 40.56 3131 3068 624.3
A 0 226 27598 39.29 3131 3068 624.3
B 3 64 517942 896.01 3097 3020 574.7
B 0 219 186186 318.73 3097 3020 574.7
B 0 230 168234 287.49 3097 3020 574.7
C 14 238 474848 673.21 3015 3033 700.8
C 10 22 95621 132.11 3015 3033 700.8
C 13 61 20847 25.42 3015 3033 700.8
D 9 1 2243695 3102.44 3003 2924 722.3
D 12 33 1976179 2732.05 3003 2924 722.3
D 1 52 1714139 2369.25 3003 2924 722.3

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