ASTROSAT CZTI

Data Quality Report

Orbit 36218

Creation date: 2022-06-10T05:36:59.196238
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_080T02_9000005176_36218cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36218cztM0_level2_quad_clean.evt
Size (bytes)480,006,72057,631,680
Size457.8 MB 55.0 MB
Events in quadrant A2,769,493360,071
Events in quadrant B3,239,963367,906
Events in quadrant C3,724,532352,763
Events in quadrant D4,467,636316,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113043
B0128262
C0143492
D0167222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4956160.322841%
B4956991.997579%
C49561322.663438%
D49563967.990315%

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 7080 4957 3 3 0.04% 0.06%
B 7080 4957 58 58 0.82% 1.17%
C 7080 4957 110 110 1.55% 2.22%
D 7080 4956 353 353 4.99% 7.12%

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 15 223 211110 1756.55 599 589 119.8
A 10 83 168152 1398.12 599 589 119.8
A 9 143 26783 218.56 599 589 119.8
B 5 236 282324 2477.42 603 587 113.7
B 5 172 184179 1614.4 603 587 113.7
B 0 213 178971 1568.6 603 587 113.7
C 0 10 1014236 7474.77 580 585 135.6
C 15 214 205728 1512.75 580 585 135.6
C 0 207 139243 1022.48 580 585 135.6
D 12 6 727797 5296.18 560 546 137.3
D 12 227 644526 4689.76 560 546 137.3
D 12 235 559420 4069.98 560 546 137.3

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