ASTROSAT CZTI

Data Quality Report

Orbit 15820

Creation date: 2024-06-27T17:13:57.537087
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/AS1A04_026T01_9000002342_15820cztM0_level2.evt modeM0/AS1A04_026T01_9000002342_15820cztM0_level2_quad_clean.evt
Size (bytes)447,788,16092,764,800
Size427.0 MB 88.5 MB
Events in quadrant A3,120,881584,921
Events in quadrant B3,607,269598,522
Events in quadrant C3,265,087603,025
Events in quadrant D3,147,239590,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133532
B0148422
C0137592
D0135302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192380.613695%
B61921292.083333%
C6192941.518088%
D6192430.694444%

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 7523 6194 3 3 0.04% 0.05%
B 7523 6194 43 43 0.57% 0.69%
C 7523 6194 0 0 0.00% 0.00%
D 7523 6194 9 9 0.12% 0.15%

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 15 174 19073 113.24 802 786 161.5
A 15 239 14195 83.03 802 786 161.5
A 0 226 7122 39.23 802 786 161.5
B 7 220 180978 1214.72 806 791 148.3
B 4 173 101873 681.44 806 791 148.3
B 4 142 45356 300.43 806 791 148.3
C 14 238 124936 682.46 794 801 181.9
C 3 233 20286 107.12 794 801 181.9
C 10 22 19474 102.66 794 801 181.9
D 2 152 34300 158.8 792 778 211.1
D 13 238 32009 147.95 792 778 211.1
D 2 234 26594 122.29 792 778 211.1

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