ASTROSAT CZTI

Data Quality Report

Orbit 41697

Creation date: 2024-06-27T22:31:44.011516
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/AS1A12_035T02_9000005690_41697cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41697cztM0_level2_quad_clean.evt
Size (bytes)363,821,76094,904,640
Size347.0 MB 90.5 MB
Events in quadrant A3,062,942640,644
Events in quadrant B2,592,819651,535
Events in quadrant C2,834,393619,882
Events in quadrant D4,523,169554,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126682
B0119322
C0121362
D0175952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5833130.222870%
B5833250.428596%
C5833450.771473%
D58333526.034631%

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 7145 5834 5 5 0.07% 0.09%
B 7145 5834 12 12 0.17% 0.21%
C 7145 5834 43 43 0.60% 0.74%
D 7145 5834 330 330 4.62% 5.66%

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 561362 4233.54 639 626 132.5
A 13 248 13103 94.2 639 626 132.5
A 15 223 12394 88.85 639 626 132.5
B 5 255 70153 558.54 634 617 124.5
B 12 111 15716 121.28 634 617 124.5
B 11 111 14652 112.73 634 617 124.5
C 15 214 238942 1626.11 626 629 146.6
C 0 10 137973 937.15 626 629 146.6
C 14 254 16572 108.79 626 629 146.6
D 2 249 746821 5046.03 611 595 147.9
D 13 249 557238 3764.05 611 595 147.9
D 12 79 450405 3041.64 611 595 147.9

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