ASTROSAT CZTI

Data Quality Report

Orbit 18251

Creation date: 2024-06-27T17:47:23.750445
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_019T01_9000002718_18251cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18251cztM0_level2_quad_clean.evt
Size (bytes)467,259,84069,275,520
Size445.6 MB 66.1 MB
Events in quadrant A3,628,557426,151
Events in quadrant B3,525,277430,342
Events in quadrant C3,294,398404,587
Events in quadrant D3,279,381401,171

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147172
B0143382
C0136612
D0136052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240931.490385%
B6240821.314103%
C6239851.362398%
D6239420.673185%

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 7590 6241 31 31 0.41% 0.50%
B 7590 6241 9 9 0.12% 0.14%
C 7589 6240 0 0 0.00% 0.00%
D 7589 6240 11 11 0.14% 0.18%

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 15 174 322543 1882.55 858 843 170.9
A 4 2 9225 49.05 858 843 170.9
A 0 226 7600 39.54 858 843 170.9
B 7 220 115962 714.28 858 841 161.2
B 6 36 44111 268.47 858 841 161.2
B 12 111 18145 107.36 858 841 161.2
C 14 238 129118 691.08 806 813 185.7
C 3 233 13296 67.24 806 813 185.7
C 0 207 7656 36.86 806 813 185.7
D 1 52 43185 215.15 818 795 197.0
D 7 238 37877 188.21 818 795 197.0
D 13 168 33885 167.95 818 795 197.0

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