ASTROSAT CZTI

Data Quality Report

Orbit 26962

Creation date: 2024-06-27T19:35:00.757128
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_019T03_9000003898_26962cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26962cztM0_level2_quad_clean.evt
Size (bytes)570,695,040117,996,480
Size544.3 MB 112.5 MB
Events in quadrant A6,315,605727,196
Events in quadrant B3,525,289824,356
Events in quadrant C3,040,323809,404
Events in quadrant D3,982,994780,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229020
B0144850
C0130400
D0159940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6182127920.689097%
B61821883.041087%
C6182861.391136%
D61822133.445487%

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 7227 6182 877 877 12.14% 14.19%
B 7227 6182 128 128 1.77% 2.07%
C 7227 6182 3 3 0.04% 0.05%
D 7227 6182 162 162 2.24% 2.62%

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 14 235 3645219 27091.66 676 662 134.5
A 6 16 26430 191.55 676 662 134.5
A 8 192 17612 126.0 676 662 134.5
B 5 172 303902 2208.73 740 723 137.3
B 0 189 193627 1405.35 740 723 137.3
B 3 64 33004 235.17 740 723 137.3
C 14 238 117367 689.27 729 734 169.2
C 2 16 56939 332.16 729 734 169.2
C 15 208 25429 145.94 729 734 169.2
D 1 52 941934 5443.2 725 705 172.9
D 2 250 235233 1356.29 725 705 172.9
D 2 234 34163 193.49 725 705 172.9

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