ASTROSAT CZTI

Data Quality Report

Orbit 35143

Creation date: 2022-03-29T16:23:08.412439
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/AS1A11_047T09_9000005028_35143cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35143cztM0_level2_quad_clean.evt
Size (bytes)1,236,312,000143,663,040
Size1.2 GB 137.0 MB
Events in quadrant A6,897,110887,854
Events in quadrant B8,736,818866,746
Events in quadrant C7,296,680880,910
Events in quadrant D13,592,235772,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289042
B0347712
C0295702
D0497432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13627570.418287%
B136276985.122184%
C13627830.609085%
D13627137610.097600%

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 16374 13629 28 28 0.17% 0.21%
B 16374 13629 430 430 2.63% 3.16%
C 16374 13629 59 59 0.36% 0.43%
D 16374 13629 1135 1135 6.93% 8.33%

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 15 169 543978 1688.78 1599 1565 321.2
A 10 83 141795 436.6 1599 1565 321.2
A 13 6 35384 105.29 1599 1565 321.2
B 5 172 1553555 5153.36 1557 1517 301.2
B 5 236 739809 2451.41 1557 1517 301.2
B 10 245 92406 301.79 1557 1517 301.2
C 15 214 561523 1561.57 1548 1559 358.6
C 0 10 301052 835.2 1548 1559 358.6
C 14 67 208017 575.75 1548 1559 358.6
D 8 195 2974232 8117.32 1495 1454 366.2
D 5 223 1635167 4460.94 1495 1454 366.2
D 7 80 831717 2267.08 1495 1454 366.2

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