ASTROSAT CZTI

Data Quality Report

Orbit 35958

Creation date: 2022-06-09T05:37:57.557708
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_080T01_9000005146_35958cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35958cztM0_level2_quad_clean.evt
Size (bytes)2,609,484,480188,985,600
Size2.4 GB 180.2 MB
Events in quadrant A11,132,7861,327,684
Events in quadrant B40,969,026755,180
Events in quadrant C15,011,6691,196,407
Events in quadrant D10,760,3061,253,424

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433725
B01332264
C0556374
D0429024

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172106203.602557%
B172101626094.479954%
C17210184210.703080%
D172102971.725741%

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 25433 17214 489 489 1.92% 2.84%
B 25433 17214 15298 15298 60.15% 88.87%
C 25433 17214 1492 1492 5.87% 8.67%
D 25433 17214 233 233 0.92% 1.35%

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 15 169 2237723 5172.3 2176 2145 432.2
A 10 83 428153 985.63 2176 2145 432.2
A 13 6 31310 67.48 2176 2145 432.2
B 5 31 10676294 47019.59 1207 1182 227.0
B 5 15 10639996 46859.72 1207 1182 227.0
B 5 14 10579062 46591.33 1207 1182 227.0
C 9 187 5663259 12424.34 1990 2012 455.7
C 15 214 682480 1493.38 1990 2012 455.7
C 0 207 445384 973.04 1990 2012 455.7
D 8 195 523772 1021.5 2103 2051 510.7
D 2 250 458086 892.89 2103 2051 510.7
D 13 249 314608 611.97 2103 2051 510.7

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