ASTROSAT CZTI

Data Quality Report

Orbit 06181

Creation date: 2024-06-27T15:03:50.955353
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/AS1A02_152T01_9000000806_06181cztM0_level2.evt modeM0/AS1A02_152T01_9000000806_06181cztM0_level2_quad_clean.evt
Size (bytes)472,665,600102,447,360
Size450.8 MB 97.7 MB
Events in quadrant A3,540,898667,829
Events in quadrant B3,577,036686,484
Events in quadrant C3,347,508646,925
Events in quadrant D3,386,795627,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148375
B0150612
C0145422
D0147172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68141622.377458%
B68151682.465150%
C68151081.584740%
D6815931.364637%

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 9460 6816 19 19 0.20% 0.28%
B 9460 6816 6 6 0.06% 0.09%
C 9460 6817 5 5 0.05% 0.07%
D 9460 6817 11 11 0.12% 0.16%

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 8 15 87477 493.58 871 855 175.5
A 15 234 61855 347.58 871 855 175.5
A 13 251 37064 206.32 871 855 175.5
B 3 64 88699 521.49 883 864 168.4
B 4 80 26161 150.19 883 864 168.4
B 12 111 16586 93.34 883 864 168.4
C 12 16 58000 295.86 839 842 193.2
C 9 16 6973 31.73 839 842 193.2
C 13 61 6489 29.23 839 842 193.2
D 2 136 128890 621.25 839 815 206.2
D 8 195 32862 155.45 839 815 206.2
D 2 14 22854 106.9 839 815 206.2

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