ASTROSAT CZTI

Data Quality Report

Orbit 36179

Creation date: 2022-06-09T20:41:48.860616
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_071T50_9000005166_36179cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36179cztM0_level2_quad_clean.evt
Size (bytes)621,622,08095,117,760
Size592.8 MB 90.7 MB
Events in quadrant A3,341,818618,822
Events in quadrant B3,817,854627,214
Events in quadrant C4,142,621606,433
Events in quadrant D7,054,962545,656

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141823
B0156742
C0162892
D0255722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6921110.158937%
B6921951.372634%
C69211652.384049%
D6921117016.905072%

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 9757 6923 1 1 0.01% 0.01%
B 9757 6923 50 50 0.51% 0.72%
C 9757 6923 143 143 1.47% 2.07%
D 9757 6922 974 974 9.98% 14.07%

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 200931 1230.3 803 786 162.7
A 8 144 16540 96.84 803 786 162.7
A 9 143 12047 69.22 803 786 162.7
B 5 172 381430 2450.05 796 774 155.4
B 5 236 168930 1082.32 796 774 155.4
B 0 213 72233 459.94 796 774 155.4
C 15 208 575000 3140.9 776 781 182.8
C 15 214 311670 1700.52 776 781 182.8
C 0 10 195070 1062.73 776 781 182.8
D 2 250 2503972 14162.33 719 697 176.8
D 12 235 848306 4795.37 719 697 176.8
D 13 249 408248 2305.73 719 697 176.8

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