ASTROSAT CZTI

Data Quality Report

Orbit 34929

Creation date: 2022-03-15T04:57:31.122442
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_086T01_9000005002_34929cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34929cztM0_level2_quad_clean.evt
Size (bytes)346,164,48042,471,360
Size330.1 MB 40.5 MB
Events in quadrant A5,522,10556,534
Events in quadrant B1,471,970353,391
Events in quadrant C1,411,196355,096
Events in quadrant D1,897,845331,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182391
B060731
C057371
D075191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2634241491.647684%
B2634491.860289%
C2634140.531511%
D2634371.404708%

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 2633 2633 1670 1670 63.43% 63.43%
B 2634 2634 35 35 1.33% 1.33%
C 2634 2634 12 12 0.46% 0.46%
D 2634 2634 40 40 1.52% 1.52%

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 5267936 373843.74 61 60 14.1
A 10 83 12898 911.07 61 60 14.1
A 13 254 952 63.3 61 60 14.1
B 5 172 123857 2095.68 307 300 59.0
B 5 255 104078 1760.2 307 300 59.0
B 0 245 22818 381.93 307 300 59.0
C 15 214 111420 1523.17 309 312 72.9
C 0 10 62230 848.83 309 312 72.9
C 0 207 12220 163.25 309 312 72.9
D 8 195 251301 3382.87 303 295 74.2
D 1 52 192372 2588.67 303 295 74.2
D 13 249 62662 840.54 303 295 74.2

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