ASTROSAT CZTI

Data Quality Report

Orbit 38842

Creation date: 2024-06-27T21:57:08.610426
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_077T06_9000005408_38842cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38842cztM0_level2_quad_clean.evt
Size (bytes)351,164,16093,813,120
Size334.9 MB 89.5 MB
Events in quadrant A3,136,677629,100
Events in quadrant B2,562,986647,557
Events in quadrant C2,677,682616,517
Events in quadrant D4,182,643553,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128042
B0116171
C0115621
D0164701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5638400.709471%
B5638250.443420%
C563830.053210%
D56382043.618304%

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 7251 5639 41 41 0.57% 0.73%
B 7251 5639 17 17 0.23% 0.30%
C 7251 5639 1 1 0.01% 0.02%
D 7251 5639 184 184 2.54% 3.26%

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 386095 3078.07 614 602 125.2
A 13 248 280012 2231.02 614 602 125.2
A 9 143 52943 417.93 614 602 125.2
B 5 184 70488 585.49 611 596 119.4
B 5 172 38021 313.51 611 596 119.4
B 0 156 26262 215.01 611 596 119.4
C 15 214 232149 1664.6 598 600 139.1
C 3 233 55321 393.39 598 600 139.1
C 15 208 34481 243.57 598 600 139.1
D 2 249 462239 3197.72 591 574 144.4
D 12 227 438819 3035.5 591 574 144.4
D 5 222 299067 2067.51 591 574 144.4

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