ASTROSAT CZTI

Data Quality Report

Orbit 36585

Creation date: 2024-06-27T21:28:48.189823
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/AS1A11_097T24_9000005224_36585cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36585cztM0_level2_quad_clean.evt
Size (bytes)537,076,80087,744,960
Size512.2 MB 83.7 MB
Events in quadrant A3,263,035574,971
Events in quadrant B3,162,094579,035
Events in quadrant C4,928,777532,886
Events in quadrant D4,483,520529,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135163
B0133835
C0185302
D0177015

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6317190.300776%
B6315440.696754%
C63174497.107804%
D63162433.847372%

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 9003 6319 3 3 0.03% 0.05%
B 9003 6318 23 23 0.26% 0.36%
C 9003 6319 395 395 4.39% 6.25%
D 9003 6319 195 195 2.17% 3.09%

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 10 83 215810 1439.1 741 727 149.5
A 15 223 166355 1108.2 741 727 149.5
A 13 254 10298 64.04 741 727 149.5
B 4 171 109005 764.39 732 714 141.7
B 5 255 38382 265.88 732 714 141.7
B 0 213 37105 256.87 732 714 141.7
C 14 254 1284425 7928.91 694 702 161.9
C 0 10 413403 2549.05 694 702 161.9
C 15 214 263560 1623.54 694 702 161.9
D 2 250 388034 2222.62 709 690 174.3
D 12 235 387471 2219.39 709 690 174.3
D 12 16 196877 1125.74 709 690 174.3

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