ASTROSAT CZTI

Data Quality Report

Orbit 06638

Creation date: 2024-06-27T15:09:42.405610
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/AS1A02_111T01_9000000900_06638cztM0_level2.evt modeM0/AS1A02_111T01_9000000900_06638cztM0_level2_quad_clean.evt
Size (bytes)1,200,816,000205,914,240
Size1.1 GB 196.4 MB
Events in quadrant A6,923,4811,337,797
Events in quadrant B7,710,9561,349,328
Events in quadrant C6,388,0261,338,770
Events in quadrant D14,364,6751,208,137

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307214
B0326393
C0295583
D0530083

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145212721.873149%
B145213822.630673%
C145211561.074306%
D1452113659.400179%

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 16691 14523 31 31 0.19% 0.21%
B 16691 14524 89 89 0.53% 0.61%
C 16691 14524 0 0 0.00% 0.00%
D 16691 14524 959 959 5.75% 6.60%

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 342194 1001.4 1669 1630 340.1
A 13 248 109895 318.34 1669 1630 340.1
A 8 15 35420 99.36 1669 1630 340.1
B 4 48 337414 1054.29 1680 1638 318.5
B 0 219 313645 979.66 1680 1638 318.5
B 4 170 183344 570.53 1680 1638 318.5
C 13 61 13022 30.26 1631 1637 376.2
C 8 128 11073 25.08 1631 1637 376.2
C 12 4 7049 14.38 1631 1637 376.2
D 8 195 4522453 11694.9 1575 1523 386.6
D 2 33 2834991 7329.71 1575 1523 386.6
D 2 63 336593 866.77 1575 1523 386.6

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