ASTROSAT CZTI

Data Quality Report

Orbit 12123

Creation date: 2024-06-27T16:22:42.387054
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/AS1G08_065T01_9000001796_12123cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12123cztM0_level2_quad_clean.evt
Size (bytes)1,473,742,080265,400,640
Size1.4 GB 253.1 MB
Events in quadrant A10,580,8551,695,200
Events in quadrant B12,499,8441,685,484
Events in quadrant C8,684,7021,693,446
Events in quadrant D11,557,2451,627,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0445345
B0498554
C0397374
D0471754

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194054222.174697%
B194058244.246328%
C19405940.484411%
D194055462.813708%

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 21421 19408 73 73 0.34% 0.38%
B 21421 19409 341 341 1.59% 1.76%
C 21421 19410 0 0 0.00% 0.00%
D 21421 19410 322 322 1.50% 1.66%

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 14 63 424870 921.12 2282 2230 458.8
A 1 162 414936 899.47 2282 2230 458.8
A 1 178 201931 435.24 2282 2230 458.8
B 4 239 2602959 6067.4 2262 2204 428.6
B 0 85 409758 950.8 2262 2204 428.6
B 11 51 263274 609.06 2262 2204 428.6
C 15 208 38035 70.15 2217 2224 510.5
C 13 61 16165 27.31 2217 2224 510.5
C 14 234 9961 15.16 2217 2224 510.5
D 1 52 1595058 3047.42 2185 2122 522.7
D 8 195 623704 1189.14 2185 2122 522.7
D 13 104 360588 685.78 2185 2122 522.7

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