ASTROSAT CZTI

Data Quality Report

Orbit 18686

Creation date: 2024-06-27T17:53:23.913084
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/AS1A05_072T04_9000002794_18686cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18686cztM0_level2_quad_clean.evt
Size (bytes)262,765,44037,359,360
Size250.6 MB 35.6 MB
Events in quadrant A1,719,176232,335
Events in quadrant B1,961,337235,189
Events in quadrant C1,834,924225,508
Events in quadrant D2,227,882214,736

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071711
B078741
C075491
D087371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3138862.740599%
B31381715.449331%
C31381324.206501%
D31382116.724028%

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 4478 3138 0 0 0.00% 0.00%
B 4478 3139 59 59 1.32% 1.88%
C 4478 3138 14 14 0.31% 0.45%
D 4478 3138 118 118 2.64% 3.76%

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 6 16 8319 88.22 444 436 89.4
A 13 254 4955 50.57 444 436 89.4
A 0 226 3850 38.21 444 436 89.4
B 7 220 141055 1696.72 432 422 82.9
B 4 171 65284 782.55 432 422 82.9
B 3 64 44221 528.43 432 422 82.9
C 9 54 99745 1020.74 422 425 97.3
C 14 238 66829 682.45 422 425 97.3
C 3 233 16489 165.09 422 425 97.3
D 7 238 624721 6184.57 416 404 100.9
D 7 96 17021 164.61 416 404 100.9
D 2 234 13568 130.4 416 404 100.9

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