ASTROSAT CZTI

Data Quality Report

Orbit 21213

Creation date: 2024-06-27T18:25:01.384771
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/AS1A06_002T01_9000003134_21213cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21213cztM0_level2_quad_clean.evt
Size (bytes)1,534,847,040148,544,640
Size1.4 GB 141.7 MB
Events in quadrant A22,965,538655,030
Events in quadrant B6,908,8181,015,286
Events in quadrant C6,196,128987,323
Events in quadrant D9,539,655943,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02662
B02662
C02651
D02662

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07676190
B02865245
C02663547
D03708242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12949801661.904394%
B129503702.857143%
C129502792.154440%
D129516955.366381%

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 14650 12951 7245 7245 49.45% 55.94%
B 14652 12954 98 98 0.67% 0.76%
C 14652 12955 0 0 0.00% 0.00%
D 14652 12953 402 402 2.74% 3.10%

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 15 236 18209423 73501.32 1225 1200 247.7
A 11 47 35852 139.88 1225 1200 247.7
A 13 254 12788 46.78 1225 1200 247.7
B 0 182 601647 1986.89 1565 1523 302.0
B 3 64 88220 287.04 1565 1523 302.0
B 12 111 36823 116.87 1565 1523 302.0
C 14 238 235235 654.44 1511 1517 357.1
C 3 233 57144 155.76 1511 1517 357.1
C 0 207 13007 32.17 1511 1517 357.1
D 7 238 2197013 6049.56 1499 1457 362.9
D 1 52 883822 2431.24 1499 1457 362.9
D 1 20 242062 662.96 1499 1457 362.9

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