ASTROSAT CZTI

Data Quality Report

Orbit 33464

Creation date: 2024-06-27T20:49:06.271481
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_047T10_9000004802_33464cztM0_level2.evt modeM0/AS1A11_047T10_9000004802_33464cztM0_level2_quad_clean.evt
Size (bytes)454,268,16086,630,400
Size433.2 MB 82.6 MB
Events in quadrant A2,475,442578,167
Events in quadrant B3,453,144577,121
Events in quadrant C2,788,913568,779
Events in quadrant D4,683,773531,737

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108373
B0137252
C0114222
D0175692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525570.133206%
B52552645.023787%
C5255641.217888%
D52551312.492864%

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 7078 5256 1 1 0.01% 0.02%
B 7078 5256 174 174 2.46% 3.31%
C 7078 5256 49 49 0.69% 0.93%
D 7078 5256 131 131 1.85% 2.49%

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 15 169 69822 562.74 615 605 123.0
A 7 192 13394 103.98 615 605 123.0
A 13 6 12736 98.63 615 605 123.0
B 5 172 592777 5116.75 608 592 115.7
B 5 255 196349 1691.43 608 592 115.7
B 0 230 80816 693.17 608 592 115.7
C 15 214 227561 1649.59 597 601 137.6
C 0 10 177627 1286.66 597 601 137.6
C 14 67 30909 220.28 597 601 137.6
D 8 195 1727507 12081.85 588 571 142.9
D 2 250 267245 1865.68 588 571 142.9
D 12 6 176091 1227.96 588 571 142.9

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