ASTROSAT CZTI

Data Quality Report

Orbit 02961

Creation date: 2024-06-27T14:22:45.549956
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/AS1G05_238T04_9000000416_02961cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02961cztM0_level2_common_clean.evt
Size (bytes)1,878,197,760235,546,560
Size1.7 GB 224.6 MB
Events in quadrant A11,871,8511,342,759
Events in quadrant B13,227,2731,338,545
Events in quadrant C15,415,9711,349,210
Events in quadrant D14,616,0951,321,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0551428
B0583497
C0647897
D0627917

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259122180.841309%
B259124741.829268%
C259128053.106669%
D259136062.338595%

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 38753 25918 151 151 0.39% 0.58%
B 38753 25918 357 357 0.92% 1.38%
C 38753 25918 759 759 1.96% 2.93%
D 38754 25919 489 489 1.26% 1.89%

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 50 678231 1244.33 2662 2600 543.0
A 0 31 463513 848.88 2662 2600 543.0
A 8 15 126634 228.44 2662 2600 543.0
B 5 70 866735 1665.26 2709 2643 518.9
B 2 249 864246 1660.47 2709 2643 518.9
B 3 27 237427 452.47 2709 2643 518.9
C 1 192 4240638 7048.82 2578 2589 601.2
C 6 80 506176 837.58 2578 2589 601.2
C 0 219 185283 303.86 2578 2589 601.2
D 12 1 1393219 2214.64 2557 2499 628.0
D 1 31 614189 974.08 2557 2499 628.0
D 2 209 399056 631.49 2557 2499 628.0

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
Veto Counter