ASTROSAT CZTI

Data Quality Report

Orbit 16518

Creation date: 2024-06-27T17:23:51.062891
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_174T01_9000002440_16518cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16518cztM0_level2_quad_clean.evt
Size (bytes)738,489,60081,411,840
Size704.3 MB 77.6 MB
Events in quadrant A3,260,163534,483
Events in quadrant B3,398,693545,478
Events in quadrant C11,897,844391,861
Events in quadrant D3,341,133511,665

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141203
B0145232
C0399712
D0146952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6899410.594289%
B6899751.087114%
C6899372754.022322%
D6899881.275547%

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 7635 6900 0 0 0.00% 0.00%
B 7635 6900 10 10 0.13% 0.14%
C 7635 6900 3175 3175 41.58% 46.01%
D 7635 6900 32 32 0.42% 0.46%

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 15 223 58983 350.3 817 798 166.1
A 15 174 27102 158.36 817 798 166.1
A 15 239 26720 156.06 817 798 166.1
B 15 35 68548 423.52 824 802 160.0
B 0 189 28422 172.67 824 802 160.0
B 4 173 26960 163.53 824 802 160.0
C 3 233 9302944 62672.79 634 638 148.4
C 14 238 94721 633.87 634 638 148.4
C 7 247 28429 187.24 634 638 148.4
D 5 222 192448 977.05 794 768 196.2
D 1 52 91816 464.1 794 768 196.2
D 10 70 54704 274.93 794 768 196.2

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