ASTROSAT CZTI

Data Quality Report

Orbit 27686

Creation date: 2024-06-27T19:43:05.094135
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/AS1A09_038T39_9000003984_27686cztM0_level2.evt modeM0/AS1A09_038T39_9000003984_27686cztM0_level2_quad_clean.evt
Size (bytes)305,847,36072,881,280
Size291.7 MB 69.5 MB
Events in quadrant A1,772,518501,389
Events in quadrant B1,999,804503,299
Events in quadrant C1,731,525476,361
Events in quadrant D3,493,004451,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080240
B086390
C078880
D0130740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3891190.488306%
B3891511.310717%
C3892190.488181%
D38922506.423433%

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 3891 3891 14 14 0.36% 0.36%
B 3891 3891 31 31 0.80% 0.80%
C 3892 3892 1 1 0.03% 0.03%
D 3892 3892 260 260 6.68% 6.68%

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 13 248 54151 587.48 445 437 91.4
A 13 254 7160 73.53 445 437 91.4
A 3 137 4089 39.94 445 437 91.4
B 5 172 162184 1900.9 443 433 85.1
B 0 230 57893 675.27 443 433 85.1
B 0 244 11916 134.95 443 433 85.1
C 14 238 68577 687.95 419 422 99.1
C 8 208 11340 110.21 419 422 99.1
C 15 208 9131 87.91 419 422 99.1
D 1 52 1061253 10743.94 411 401 98.7
D 12 2 625996 6335.81 411 401 98.7
D 2 250 163194 1648.71 411 401 98.7

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