ASTROSAT CZTI

Data Quality Report

Orbit 17026

Creation date: 2024-06-27T17:30:58.900942
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_206T01_9000002528_17026cztM0_level2.evt modeM0/AS1A05_206T01_9000002528_17026cztM0_level2_quad_clean.evt
Size (bytes)531,449,280114,243,840
Size506.8 MB 109.0 MB
Events in quadrant A3,613,179734,649
Events in quadrant B4,179,702749,381
Events in quadrant C3,810,890729,524
Events in quadrant D3,970,906713,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160400
B0172610
C0160420
D0171190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76523013.933612%
B76523274.273393%
C76523104.051228%
D76532813.671763%

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 7653 7653 4 4 0.05% 0.05%
B 7653 7653 5 5 0.07% 0.07%
C 7653 7653 0 0 0.00% 0.00%
D 7654 7654 37 37 0.48% 0.48%

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 4 2 49082 257.23 915 888 187.4
A 12 189 26621 137.35 915 888 187.4
A 15 174 20797 106.26 915 888 187.4
B 7 220 212927 1216.45 915 889 174.3
B 4 216 73765 418.09 915 889 174.3
B 3 209 69458 393.38 915 889 174.3
C 3 233 174092 832.97 888 891 207.9
C 14 238 135377 646.78 888 891 207.9
C 7 247 29717 138.63 888 891 207.9
D 1 52 436025 1967.8 908 876 221.1
D 10 70 53708 238.91 908 876 221.1
D 2 234 38081 168.25 908 876 221.1

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