ASTROSAT CZTI

Data Quality Report

Orbit 18537

Creation date: 2024-06-27T17:51:20.391548
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/AS1A05_104T02_9000002752_18537cztM0_level2.evt modeM0/AS1A05_104T02_9000002752_18537cztM0_level2_quad_clean.evt
Size (bytes)290,004,48052,462,080
Size276.6 MB 50.0 MB
Events in quadrant A1,872,692341,679
Events in quadrant B1,926,552344,729
Events in quadrant C1,827,833327,521
Events in quadrant D2,903,689313,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080541
B081051
C077822
D0111821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3697752.028672%
B3697762.055721%
C3696742.002165%
D36962787.521645%

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 4737 3697 11 11 0.23% 0.30%
B 4737 3697 16 16 0.34% 0.43%
C 4736 3696 0 0 0.00% 0.00%
D 4736 3696 221 221 4.67% 5.98%

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 48803 501.82 473 464 96.3
A 13 254 5674 54.09 473 464 96.3
A 0 226 4240 39.2 473 464 96.3
B 3 64 70769 767.43 469 456 91.6
B 4 80 13452 141.85 469 456 91.6
B 12 111 10796 112.86 469 456 91.6
C 14 238 69182 644.57 451 455 106.6
C 13 61 3152 25.29 451 455 106.6
C 3 233 1631 11.03 451 455 106.6
D 7 238 772943 6953.17 449 437 111.1
D 1 52 361657 3251.27 449 437 111.1
D 7 96 39488 351.49 449 437 111.1

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