ASTROSAT CZTI

Data Quality Report

Orbit 01018

Creation date: 2024-06-27T14:06:13.694453
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/AS1P01_998T02_9000000190_01018cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01018cztM0_level2_quad_clean.evt
Size (bytes)1,291,533,120132,897,600
Size1.2 GB 126.7 MB
Events in quadrant A9,428,324884,140
Events in quadrant B10,134,733885,357
Events in quadrant C9,838,130861,735
Events in quadrant D9,195,581850,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335262
B0356662
C0347502
D0329032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A782560.076677%
B7826350.447227%
C7826290.370560%
D7826901.150013%

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 8260 7829 381 381 4.61% 4.87%
B 8261 7830 564 564 6.83% 7.20%
C 8261 7830 494 494 5.98% 6.31%
D 8261 7830 483 483 5.85% 6.17%

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 0 231 40787 65.13 2441 2452 588.6
A 12 189 14303 20.13 2441 2452 588.6
A 11 79 11450 15.29 2441 2452 588.6
B 8 234 117276 189.14 2563 2568 606.5
B 15 22 66568 105.53 2563 2568 606.5
B 0 151 50734 79.42 2563 2568 606.5
C 15 241 402793 606.57 2368 2453 660.0
C 9 85 98817 146.01 2368 2453 660.0
C 3 79 37137 52.55 2368 2453 660.0
D 7 207 509588 724.71 2271 2349 699.9
D 13 73 69198 95.51 2271 2349 699.9
D 1 83 55304 75.66 2271 2349 699.9

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