ASTROSAT CZTI

Data Quality Report

Orbit 37811

Creation date: 2024-06-27T21:44:45.637211
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/AS1A10_103T06_9000005348_37811cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37811cztM0_level2_quad_clean.evt
Size (bytes)411,612,48093,202,560
Size392.5 MB 88.9 MB
Events in quadrant A2,956,225629,823
Events in quadrant B2,939,080640,722
Events in quadrant C2,621,999630,215
Events in quadrant D3,621,969584,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118243
B0118342
C0105962
D0137942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4807240.499272%
B4807270.561681%
C4807300.624090%
D48073176.594550%

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 6960 4808 4 4 0.06% 0.08%
B 6960 4808 14 14 0.20% 0.29%
C 6960 4808 18 18 0.26% 0.37%
D 6960 4808 305 305 4.38% 6.34%

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 319776 2579.79 616 607 123.7
A 15 222 190216 1532.58 616 607 123.7
A 9 143 19101 149.48 616 607 123.7
B 5 172 140104 1208.04 608 595 115.5
B 0 213 89217 767.4 608 595 115.5
B 10 246 83722 719.82 608 595 115.5
C 15 214 220385 1626.19 587 594 135.2
C 0 10 102635 754.98 587 594 135.2
C 15 159 5090 33.27 587 594 135.2
D 2 249 708655 5013.89 583 570 141.2
D 1 52 196748 1389.12 583 570 141.2
D 10 199 174042 1228.34 583 570 141.2

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