ASTROSAT CZTI

Data Quality Report

Orbit 35912

Creation date: 2022-06-09T00:48:18.129331
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_080T01_9000005146_35912cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35912cztM0_level2_quad_clean.evt
Size (bytes)504,515,52074,016,000
Size481.1 MB 70.6 MB
Events in quadrant A2,760,105508,996
Events in quadrant B5,853,904413,541
Events in quadrant C2,940,926490,433
Events in quadrant D3,379,514471,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110633
B0206749
C0116172
D0134422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507780.157573%
B5076131825.965327%
C5077651.280284%
D5077661.299980%

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 7048 5078 2 2 0.03% 0.04%
B 7048 5076 924 924 13.11% 18.20%
C 7048 5078 63 63 0.89% 1.24%
D 7048 5078 54 54 0.77% 1.06%

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 145585 1097.93 651 642 132.0
A 15 169 42509 317.14 651 642 132.0
A 9 143 37894 282.18 651 642 132.0
B 5 172 3489322 32577.72 566 556 107.1
B 0 245 85682 794.9 566 556 107.1
B 5 255 36566 336.26 566 556 107.1
C 0 10 257931 1828.6 613 619 140.7
C 15 214 216053 1530.99 613 619 140.7
C 0 207 77320 545.08 613 619 140.7
D 8 195 367218 2459.73 619 605 149.0
D 13 249 237602 1590.09 619 605 149.0
D 12 227 94492 629.92 619 605 149.0

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