ASTROSAT CZTI

Data Quality Report

Orbit 19711

Creation date: 2024-06-27T18:05:51.745946
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_013T01_9000002944_19711cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19711cztM0_level2_quad_clean.evt
Size (bytes)484,539,84092,185,920
Size462.1 MB 87.9 MB
Events in quadrant A3,075,542605,997
Events in quadrant B3,282,726614,670
Events in quadrant C4,027,231567,565
Events in quadrant D3,850,024552,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134282
B0139613
C0164792
D0159412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461230.355982%
B6460430.665635%
C64602453.792570%
D64601732.678019%

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 7576 6462 0 0 0.00% 0.00%
B 7575 6460 5 5 0.07% 0.08%
C 7575 6460 69 69 0.91% 1.07%
D 7575 6461 142 142 1.87% 2.20%

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 13 254 7527 41.9 797 781 161.0
A 0 226 7028 38.8 797 781 161.0
A 3 137 6387 34.82 797 781 161.0
B 0 197 54558 357.17 796 777 150.6
B 4 171 38524 250.69 796 777 150.6
B 7 220 26446 170.47 796 777 150.6
C 3 233 913931 5277.59 745 749 173.0
C 14 238 117287 673.51 745 749 173.0
C 7 247 74203 424.52 745 749 173.0
D 1 52 625238 3399.32 754 733 183.7
D 1 20 108613 587.22 754 733 183.7
D 12 225 82046 442.61 754 733 183.7

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