ASTROSAT CZTI

Data Quality Report

Orbit 15861

Creation date: 2024-06-27T17:14:27.238964
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_143T01_9000002344_15861cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15861cztM0_level2_quad_clean.evt
Size (bytes)466,989,12082,114,560
Size445.4 MB 78.3 MB
Events in quadrant A4,068,274513,723
Events in quadrant B3,346,944529,142
Events in quadrant C3,237,549503,451
Events in quadrant D3,058,684497,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163503
B0140762
C0136972
D0133692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63463094.869209%
B6346711.118815%
C6346861.355184%
D6346280.441223%

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 7562 6348 141 141 1.86% 2.22%
B 7562 6348 5 5 0.07% 0.08%
C 7562 6348 0 0 0.00% 0.00%
D 7562 6348 1 1 0.01% 0.02%

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 15 239 969791 5988.89 802 786 161.8
A 13 248 9091 51.33 802 786 161.8
A 0 226 7174 39.48 802 786 161.8
B 4 216 40594 256.07 819 800 155.4
B 5 236 30725 192.56 819 800 155.4
B 10 245 26681 166.54 819 800 155.4
C 14 238 122005 660.37 786 791 183.6
C 3 233 37277 198.77 786 791 183.6
C 0 207 10214 51.34 786 791 183.6
D 2 234 25020 124.62 797 776 194.5
D 12 110 15045 73.35 797 776 194.5
D 10 70 13806 66.98 797 776 194.5

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