ASTROSAT CZTI

Data Quality Report

Orbit 36714

Creation date: 2024-06-27T21:30:41.575368
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_101T01_9000005238_36714cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36714cztM0_level2_quad_clean.evt
Size (bytes)443,911,68057,441,600
Size423.3 MB 54.8 MB
Events in quadrant A2,875,730339,114
Events in quadrant B3,359,947340,993
Events in quadrant C3,368,343329,477
Events in quadrant D3,442,791320,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121133
B0136562
C0135052
D0140162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584690.153951%
B5846811.385563%
C58461252.138214%
D58461242.121108%

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 7279 5847 1 1 0.01% 0.02%
B 7279 5847 47 47 0.65% 0.80%
C 7279 5847 121 121 1.66% 2.07%
D 7279 5847 99 99 1.36% 1.69%

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 10 83 237968 1747.66 663 650 135.8
A 10 228 36778 266.05 663 650 135.8
A 9 143 17586 124.72 663 650 135.8
B 5 255 244791 1914.6 657 641 127.5
B 0 221 176163 1376.43 657 641 127.5
B 4 171 125836 981.77 657 641 127.5
C 14 254 336597 2265.93 634 638 148.3
C 0 10 286639 1928.98 634 638 148.3
C 15 214 263596 1773.56 634 638 148.3
D 12 233 254617 1606.52 639 620 158.1
D 13 249 238402 1503.96 639 620 158.1
D 2 249 115475 726.45 639 620 158.1

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