ASTROSAT CZTI

Data Quality Report

Orbit 36364

Creation date: 2022-06-20T02:28:24.649860
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/AS1A11_097T17_9000005194_36364cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36364cztM0_level2_quad_clean.evt
Size (bytes)399,715,20064,327,680
Size381.2 MB 61.3 MB
Events in quadrant A2,479,640404,528
Events in quadrant B2,837,898405,044
Events in quadrant C2,741,394410,013
Events in quadrant D3,710,088380,795

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104923
B0116162
C0111182
D0143202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4946140.283057%
B4946971.961181%
C4946621.253538%
D49462695.438738%

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 7069 4947 7 7 0.10% 0.14%
B 7069 4947 89 89 1.26% 1.80%
C 7069 4947 47 47 0.66% 0.95%
D 7069 4947 305 305 4.31% 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 10 83 177171 1549.53 571 561 114.0
A 9 143 62377 542.36 571 561 114.0
A 12 189 17236 146.3 571 561 114.0
B 5 172 406105 3773.6 565 550 107.5
B 5 236 72074 665.51 565 550 107.5
B 4 232 41110 377.4 565 550 107.5
C 0 10 229931 1752.08 562 567 130.9
C 15 214 215034 1638.28 562 567 130.9
C 0 207 106669 810.5 562 567 130.9
D 12 6 1045102 7875.11 547 534 132.6
D 13 249 141634 1063.77 547 534 132.6
D 2 249 109205 819.28 547 534 132.6

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