ASTROSAT CZTI

Data Quality Report

Orbit 09018

Creation date: 2024-06-27T15:40:05.569389
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/AS1C02_037T01_9000001252_09018cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_09018cztM0_level2_quad_clean.evt
Size (bytes)279,011,52049,224,960
Size266.1 MB 46.9 MB
Events in quadrant A2,235,609305,781
Events in quadrant B1,805,895311,170
Events in quadrant C1,692,913303,695
Events in quadrant D2,446,041291,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092970
B080162
C078914
D099180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A394240.101471%
B394120.050749%
C394020.050761%
D39421062.688990%

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 3942 3942 0 0 0.00% 0.00%
B 3942 3942 1 1 0.03% 0.03%
C 3942 3942 0 0 0.00% 0.00%
D 3942 3942 108 108 2.74% 2.74%

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 8 5 431543 4607.46 451 441 93.6
A 1 162 40811 431.46 451 441 93.6
A 1 178 7822 78.89 451 441 93.6
B 0 214 26361 293.34 451 441 88.4
B 4 48 12586 137.45 451 441 88.4
B 12 111 8782 94.4 451 441 88.4
C 13 61 3370 28.92 433 434 101.5
C 5 128 1210 7.64 433 434 101.5
C 3 202 1107 6.62 433 434 101.5
D 1 52 493415 4590.19 432 418 107.4
D 7 71 226245 2102.63 432 418 107.4
D 6 225 54466 503.23 432 418 107.4

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