ASTROSAT CZTI

Data Quality Report

Orbit 07864

Creation date: 2024-06-27T15:24:58.416757
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/AS1G06_077T02_9000001076_07864cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07864cztM0_level2_quad_clean.evt
Size (bytes)255,893,76026,737,920
Size244.0 MB 25.5 MB
Events in quadrant A2,198,424142,519
Events in quadrant B1,532,136150,374
Events in quadrant C2,321,873145,253
Events in quadrant D1,476,985141,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0883011
B066814
C0915610
D066692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3224732.264268%
B322650.154991%
C3225270.837209%
D322790.278897%

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 3228 3228 39 39 1.21% 1.21%
B 3228 3228 2 2 0.06% 0.06%
C 3228 3228 22 22 0.68% 0.68%
D 3228 3228 9 9 0.28% 0.28%

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 15 239 591161 7911.96 360 352 74.7
A 15 234 185301 2476.79 360 352 74.7
A 15 223 22805 300.68 360 352 74.7
B 4 239 45298 631.46 363 355 71.2
B 4 173 40235 560.32 363 355 71.2
B 0 214 18552 255.67 363 355 71.2
C 1 16 812771 9817.53 352 354 82.8
C 8 229 119894 1444.56 352 354 82.8
C 8 128 7286 83.77 352 354 82.8
D 2 152 58905 663.81 356 345 88.2
D 7 71 19545 217.64 356 345 88.2
D 5 233 15157 167.9 356 345 88.2

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