ASTROSAT CZTI

Data Quality Report

Orbit 15412

Creation date: 2024-06-27T17:08:09.076209
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/AS1G08_072T01_9000002272_15412cztM0_level2.evt modeM0/AS1G08_072T01_9000002272_15412cztM0_level2_quad_clean.evt
Size (bytes)230,126,40030,335,040
Size219.5 MB 28.9 MB
Events in quadrant A1,592,713171,681
Events in quadrant B1,591,296177,975
Events in quadrant C1,844,109177,223
Events in quadrant D1,725,250166,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0662
C0664
D0668

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06936259
B06866232
C07838373
D07348242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3155230.729002%
B3170250.788644%
C3132180.574713%
D3158230.728309%

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 3275 3242 3 3 0.09% 0.09%
B 3275 3248 1 1 0.03% 0.03%
C 3275 3237 1 1 0.03% 0.03%
D 3275 3247 5 5 0.15% 0.15%

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 14 238 49542 612.58 392 384 80.2
A 14 237 13940 168.93 392 384 80.2
A 9 143 9355 111.79 392 384 80.2
B 4 48 16321 210.17 395 387 75.8
B 3 209 13007 166.45 395 387 75.8
B 0 197 9287 117.39 395 387 75.8
C 3 233 326075 3687.69 381 385 88.3
C 7 247 18847 209.04 381 385 88.3
C 10 22 11583 126.79 381 385 88.3
D 5 222 174340 1852.68 384 373 93.9
D 10 70 29062 305.53 384 373 93.9
D 2 221 22782 238.65 384 373 93.9

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