ASTROSAT CZTI

Data Quality Report

Orbit 20788

Creation date: 2024-06-27T18:19:36.658340
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/AS1A05_013T01_9000003070_20788cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20788cztM0_level2_quad_clean.evt
Size (bytes)587,687,04092,217,600
Size560.5 MB 87.9 MB
Events in quadrant A3,050,059620,962
Events in quadrant B3,662,495596,112
Events in quadrant C3,027,951588,903
Events in quadrant D7,625,773542,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131251
B0149802
C0131351
D0269591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6366681.068175%
B63652123.330715%
C6365851.335428%
D6365164925.907306%

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 7181 6366 0 0 0.00% 0.00%
B 7179 6364 125 125 1.74% 1.96%
C 7180 6366 0 0 0.00% 0.00%
D 7180 6365 1402 1402 19.53% 22.03%

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 0 226 7084 39.47 793 776 159.8
A 3 137 6203 33.96 793 776 159.8
A 12 194 5760 31.19 793 776 159.8
B 7 220 252890 1730.79 768 751 145.7
B 0 182 228845 1565.74 768 751 145.7
B 3 64 39629 266.87 768 751 145.7
C 14 238 116914 670.4 745 748 173.3
C 7 247 6788 34.86 745 748 173.3
C 13 61 5234 25.89 745 748 173.3
D 1 20 2865880 17132.07 690 670 167.2
D 1 52 1816674 10858.51 690 670 167.2
D 12 227 149478 889.77 690 670 167.2

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