ASTROSAT CZTI

Data Quality Report

Orbit 14556

Creation date: 2024-06-27T16:56:48.989086
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/AS1A04_089T01_9000002146_14556cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14556cztM0_level2_quad_clean.evt
Size (bytes)237,902,40034,799,040
Size226.9 MB 33.2 MB
Events in quadrant A1,990,836213,043
Events in quadrant B1,566,665215,175
Events in quadrant C1,797,893206,712
Events in quadrant D1,648,247208,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078892
B065011
C074291
D068441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2942511.733515%
B2942491.665534%
C2942301.019714%
D29421003.399048%

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 3943 2944 0 0 0.00% 0.00%
B 3943 2944 4 4 0.10% 0.14%
C 3943 2944 0 0 0.00% 0.00%
D 3943 2944 58 58 1.47% 1.97%

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 23 309115 3926.44 379 370 78.6
A 12 189 108176 1371.02 379 370 78.6
A 8 15 89769 1136.93 379 370 78.6
B 12 18 33179 440.72 377 368 74.4
B 10 245 22273 294.23 377 368 74.4
B 12 2 12607 164.4 377 368 74.4
C 3 233 357421 4130.34 366 369 86.4
C 6 96 9125 101.29 366 369 86.4
C 13 61 2691 26.86 366 369 86.4
D 5 223 84294 931.23 365 356 90.1
D 2 152 67702 747.16 365 356 90.1
D 10 199 44052 484.78 365 356 90.1

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