ASTROSAT CZTI

Data Quality Report

Orbit 35792

Creation date: 2022-05-12T14:21:54.978959
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/AS1A09_029T09_9000005138_35792cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35792cztM0_level2_quad_clean.evt
Size (bytes)539,510,40085,576,320
Size514.5 MB 81.6 MB
Events in quadrant A5,168,764543,470
Events in quadrant B4,046,430548,330
Events in quadrant C3,081,696552,170
Events in quadrant D3,631,681524,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196743
B0160202
C0127732
D0147552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60602043.366337%
B60602744.521452%
C6060420.693069%
D60601041.716172%

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 9104 6062 155 155 1.70% 2.56%
B 9104 6062 197 197 2.16% 3.25%
C 9104 6062 33 33 0.36% 0.54%
D 9104 6062 89 89 0.98% 1.47%

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 15 169 2295532 16214.79 697 685 141.5
A 10 83 169896 1195.6 697 685 141.5
A 13 6 10152 66.89 697 685 141.5
B 4 232 408155 3090.5 687 669 131.9
B 5 172 325840 2466.2 687 669 131.9
B 0 213 217066 1641.22 687 669 131.9
C 15 214 255389 1605.5 680 686 158.6
C 0 10 120096 752.69 680 686 158.6
C 0 207 31131 191.91 680 686 158.6
D 8 195 372317 2245.08 678 658 165.5
D 13 249 235556 1418.95 678 658 165.5
D 7 223 114278 686.34 678 658 165.5

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