ASTROSAT CZTI

Data Quality Report

Orbit 06736

Creation date: 2024-06-27T15:11:07.715552
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/AS1G06_087T01_9000000926_06736cztM0_level2.evt modeM0/AS1G06_087T01_9000000926_06736cztM0_level2_quad_clean.evt
Size (bytes)484,588,80072,057,600
Size462.1 MB 68.7 MB
Events in quadrant A4,817,190391,816
Events in quadrant B2,883,406463,810
Events in quadrant C2,762,006459,466
Events in quadrant D3,795,880437,535

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184662
B0127621
C0127001
D0152371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A613396215.685635%
B61331782.902332%
C61331652.690364%
D61332433.962172%

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 6413 6134 638 638 9.95% 10.40%
B 6413 6134 2 2 0.03% 0.03%
C 6413 6134 1 1 0.02% 0.02%
D 6413 6134 78 78 1.22% 1.27%

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 14 111 2235057 16992.56 638 623 131.5
A 8 15 126053 953.88 638 623 131.5
A 0 226 5961 40.59 638 623 131.5
B 4 81 67498 484.49 709 690 137.9
B 15 204 39209 279.34 709 690 137.9
B 0 214 20718 145.24 709 690 137.9
C 9 16 28044 169.74 689 689 161.2
C 10 22 12002 70.2 689 689 161.2
C 8 128 11613 67.78 689 689 161.2
D 8 195 446323 2663.65 684 661 167.3
D 2 33 306150 1825.86 684 661 167.3
D 14 34 258747 1542.54 684 661 167.3

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