ASTROSAT CZTI

Data Quality Report

Orbit 31723

Creation date: 2024-06-27T20:31:56.915925
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/AS1T04_034T01_9000004632_31723cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31723cztM0_level2_quad_clean.evt
Size (bytes)1,142,723,520146,217,600
Size1.1 GB 139.4 MB
Events in quadrant A8,296,518893,942
Events in quadrant B11,684,383922,434
Events in quadrant C7,074,776889,175
Events in quadrant D6,734,031882,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325616
B0430192
C0285102
D0272242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121396765.568828%
B121398717.175220%
C121394443.657632%
D121391861.532251%

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 13459 12141 359 359 2.67% 2.96%
B 13459 12141 454 454 3.37% 3.74%
C 13459 12141 175 175 1.30% 1.44%
D 13459 12141 78 78 0.58% 0.64%

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 0 13 2717573 9293.59 1446 1414 292.3
A 13 254 21928 70.19 1446 1414 292.3
A 3 137 14987 46.44 1446 1414 292.3
B 6 159 3197837 11616.89 1430 1393 275.2
B 4 80 2486073 9030.12 1430 1393 275.2
B 10 245 130244 468.29 1430 1393 275.2
C 0 10 1126826 3406.67 1396 1403 330.4
C 14 238 220656 663.68 1396 1403 330.4
C 3 233 111011 331.78 1396 1403 330.4
D 8 195 783294 2288.9 1429 1391 341.6
D 13 249 204194 593.67 1429 1391 341.6
D 12 233 123078 356.22 1429 1391 341.6

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