ASTROSAT CZTI

Data Quality Report

Orbit 29653

Creation date: 2024-06-27T20:06:30.248668
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/AS1C05_019T01_9000004270_29653cztM0_level2.evt modeM0/AS1C05_019T01_9000004270_29653cztM0_level2_quad_clean.evt
Size (bytes)1,595,018,880245,966,400
Size1.5 GB 234.6 MB
Events in quadrant A8,170,3371,599,591
Events in quadrant B8,715,5741,634,169
Events in quadrant C8,586,0151,582,954
Events in quadrant D21,625,6971,397,570

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363743
B0372783
C0371603
D0767113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179201320.736607%
B179211851.032308%
C179212061.149489%
D17921340318.988896%

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 19710 17921 3 3 0.02% 0.02%
B 19711 17923 19 19 0.10% 0.11%
C 19711 17923 1 1 0.01% 0.01%
D 19711 17922 3055 3055 15.50% 17.05%

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 12 96 38909 87.07 2101 2055 423.2
A 13 254 32643 72.27 2101 2055 423.2
A 15 174 30130 66.33 2101 2055 423.2
B 0 229 157847 392.33 2090 2030 397.2
B 10 245 131053 324.87 2090 2030 397.2
B 0 230 84718 208.2 2090 2030 397.2
C 14 238 334038 707.43 2020 2025 469.3
C 1 90 118763 248.74 2020 2025 469.3
C 3 233 89521 186.43 2020 2025 469.3
D 7 80 11397846 25164.46 1900 1844 452.9
D 8 195 1626769 3588.13 1900 1844 452.9
D 13 153 543468 1196.01 1900 1844 452.9

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