ASTROSAT CZTI

Data Quality Report

Orbit 25339

Creation date: 2024-06-27T19:16:32.228189
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/AS1A09_059T01_9000003706_25339cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25339cztM0_level2_quad_clean.evt
Size (bytes)1,417,991,040247,996,800
Size1.3 GB 236.5 MB
Events in quadrant A8,707,9501,595,732
Events in quadrant B8,853,7371,620,376
Events in quadrant C9,655,1491,540,352
Events in quadrant D14,470,3831,472,076

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382170
B0386090
C0409560
D0555300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186131380.741417%
B186141350.725261%
C186144382.353068%
D1861411516.183518%

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 20713 18617 14 14 0.07% 0.08%
B 20714 18618 0 0 0.00% 0.00%
C 20714 18618 160 160 0.77% 0.86%
D 20714 18618 803 803 3.88% 4.31%

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 8 192 136547 302.8 2221 2173 443.8
A 13 254 27264 56.54 2221 2173 443.8
A 3 137 20675 41.69 2221 2173 443.8
B 0 190 110755 257.7 2213 2154 421.4
B 3 112 57358 130.99 2213 2154 421.4
B 12 111 52931 120.49 2213 2154 421.4
C 7 87 510067 1015.61 2136 2148 500.1
C 14 238 339371 674.29 2136 2148 500.1
C 3 233 260105 515.8 2136 2148 500.1
D 1 52 2839746 5560.15 2118 2053 510.4
D 8 195 1665627 3259.59 2118 2053 510.4
D 12 235 1524591 2983.25 2118 2053 510.4

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