ASTROSAT CZTI

Data Quality Report

Orbit 35512

Creation date: 2022-04-23T14:21:04.656493
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/AS1A11_097T07_9000005084_35512cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35512cztM0_level2_quad_clean.evt
Size (bytes)479,056,32081,374,400
Size456.9 MB 77.6 MB
Events in quadrant A3,165,665510,172
Events in quadrant B3,454,884514,026
Events in quadrant C3,958,853502,520
Events in quadrant D3,481,079477,706

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134653
B0143972
C0156602
D0145482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A659970.106077%
B6599570.863767%
C65991592.409456%
D6599981.485073%

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 9916 6601 0 0 0.00% 0.00%
B 9916 6601 24 24 0.24% 0.36%
C 9916 6601 107 107 1.08% 1.62%
D 9916 6601 69 69 0.70% 1.05%

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 150066 957.72 773 757 155.9
A 15 169 16742 102.53 773 757 155.9
A 13 254 9685 57.27 773 757 155.9
B 5 172 274604 1859.38 766 744 147.3
B 4 232 90302 608.06 766 744 147.3
B 5 236 48161 321.94 766 744 147.3
C 0 10 422973 2416.86 747 752 174.7
C 0 207 296976 1695.63 747 752 174.7
C 15 214 271112 1547.58 747 752 174.7
D 10 118 203851 1122.0 747 729 181.0
D 8 195 145733 800.97 747 729 181.0
D 13 249 79796 436.75 747 729 181.0

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