ASTROSAT CZTI

Data Quality Report

Orbit 20982

Creation date: 2024-06-27T18:22:20.131576
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/AS1T03_133T01_9000003092_20982cztM0_level2.evt modeM0/AS1T03_133T01_9000003092_20982cztM0_level2_quad_clean.evt
Size (bytes)1,309,420,800233,942,400
Size1.2 GB 223.1 MB
Events in quadrant A8,147,8691,508,574
Events in quadrant B9,141,3681,506,971
Events in quadrant C8,329,5381,474,217
Events in quadrant D12,848,7691,383,229

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359814
B0386653
C0359903
D0497003

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175951450.824098%
B175963001.704933%
C175962211.255967%
D1759611036.268470%

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 19580 17598 3 3 0.02% 0.02%
B 19581 17599 98 98 0.50% 0.56%
C 19581 17599 0 0 0.00% 0.00%
D 19581 17599 944 944 4.82% 5.36%

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 0 226 18154 37.84 2116 2068 425.1
A 3 137 18033 37.56 2116 2068 425.1
A 12 194 14985 30.39 2116 2068 425.1
B 7 220 649264 1615.41 2100 2041 400.7
B 0 197 107604 263.47 2100 2041 400.7
B 3 64 65275 157.82 2100 2041 400.7
C 14 238 315274 653.5 2040 2055 479.3
C 7 247 41707 82.73 2040 2055 479.3
C 13 61 14382 25.72 2040 2055 479.3
D 1 52 4550135 9318.43 2017 1963 488.1
D 7 223 335909 684.2 2017 1963 488.1
D 9 1 124639 251.34 2017 1963 488.1

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