ASTROSAT CZTI

Data Quality Report

Orbit 39795

Creation date: 2024-06-27T22:09:03.375831
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/AS1T05_086T01_9000005496_39795cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39795cztM0_level2_quad_clean.evt
Size (bytes)71,239,68011,430,720
Size67.9 MB 10.9 MB
Events in quadrant A726,79774,684
Events in quadrant B348,43091,366
Events in quadrant C1,202,64447,000
Events in quadrant D303,32078,487

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025870
B014590
C040440
D013770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67714220.974889%
B67710.147710%
C67733549.483013%
D67700.000000%

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 677 677 101 101 14.92% 14.92%
B 677 677 0 0 0.00% 0.00%
C 677 677 286 286 42.25% 42.25%
D 677 677 0 0 0.00% 0.00%

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 9 143 362342 21123.09 72 71 17.2
A 2 79 44767 2606.11 72 71 17.2
A 10 83 32209 1873.88 72 71 17.2
B 0 190 20413 1152.83 78 77 17.6
B 5 172 17365 980.04 78 77 17.6
B 12 111 1856 100.85 78 77 17.6
C 9 187 796673 51044.31 58 58 15.6
C 15 208 154942 9924.43 58 58 15.6
C 15 214 20957 1339.14 58 58 15.6
D 2 249 8055 392.52 75 73 20.3
D 2 120 4521 218.73 75 73 20.3
D 2 234 3189 153.23 75 73 20.3

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