ASTROSAT CZTI

Data Quality Report

Orbit 36001

Creation date: 2022-07-19T02:01:09.268746
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_050T19_9000005156_36001cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_36001cztM0_level2_quad_clean.evt
Size (bytes)421,338,240102,136,320
Size401.8 MB 97.4 MB
Events in quadrant A2,500,173701,051
Events in quadrant B3,005,976696,155
Events in quadrant C3,247,330690,555
Events in quadrant D3,673,869661,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102983
B0119982
C0126012
D0140252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489550.102145%
B48951092.226762%
C48952284.657814%
D48952264.616956%

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 7048 4896 0 0 0.00% 0.00%
B 7048 4896 68 68 0.96% 1.39%
C 7048 4896 195 195 2.77% 3.98%
D 7048 4896 181 181 2.57% 3.70%

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 162625 1363.5 602 592 118.8
A 13 254 7979 62.16 602 592 118.8
A 13 6 7698 59.8 602 592 118.8
B 5 172 376080 3437.35 585 572 109.2
B 4 171 142048 1295.05 585 572 109.2
B 5 255 69116 627.44 585 572 109.2
C 9 187 432954 3290.56 577 582 131.4
C 15 214 206402 1566.39 577 582 131.4
C 0 207 168948 1281.34 577 582 131.4
D 12 6 293202 2062.94 585 571 141.9
D 12 227 268541 1889.09 585 571 141.9
D 12 235 262522 1846.66 585 571 141.9

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