ASTROSAT CZTI

Data Quality Report

Orbit 20978

Creation date: 2024-06-27T18:22:18.170055
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/AS1T03_133T01_9000003092_20978cztM0_level2.evt modeM0/AS1T03_133T01_9000003092_20978cztM0_level2_quad_clean.evt
Size (bytes)268,364,16029,793,600
Size255.9 MB 28.4 MB
Events in quadrant A1,623,902172,556
Events in quadrant B1,698,186174,755
Events in quadrant C1,660,704170,301
Events in quadrant D2,918,968149,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069161
B070331
C069181
D0108561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33021474.451847%
B33021654.996972%
C33021394.209570%
D330245113.658389%

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 3562 3303 0 0 0.00% 0.00%
B 3562 3303 5 5 0.14% 0.15%
C 3562 3303 0 0 0.00% 0.00%
D 3562 3303 337 337 9.46% 10.20%

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 3 137 3676 37.28 422 411 87.6
A 0 226 3539 35.71 422 411 87.6
A 12 194 2844 27.78 422 411 87.6
B 3 64 27729 327.62 423 410 83.4
B 12 111 10391 119.7 423 410 83.4
B 11 111 9408 107.91 423 410 83.4
C 14 238 61665 632.4 407 409 96.9
C 7 247 9891 97.89 407 409 96.9
C 13 61 2846 25.16 407 409 96.9
D 1 52 1352394 13869.69 396 384 97.5
D 9 1 57197 582.82 396 384 97.5
D 2 234 11240 111.37 396 384 97.5

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