ASTROSAT CZTI

Data Quality Report

Orbit 14781

Creation date: 2024-06-27T16:59:37.438676
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/AS1A04_022T02_9000002184_14781cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14781cztM0_level2_quad_clean.evt
Size (bytes)306,429,12058,544,640
Size292.2 MB 55.8 MB
Events in quadrant A2,009,805374,624
Events in quadrant B2,555,238373,184
Events in quadrant C2,380,060370,655
Events in quadrant D2,052,207361,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086122
B0104391
C098921
D089931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4142711.714148%
B41421583.814582%
C4142651.569290%
D4142942.269435%

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 4868 4144 0 0 0.00% 0.00%
B 4868 4144 27 27 0.55% 0.65%
C 4868 4144 0 0 0.00% 0.00%
D 4868 4144 23 23 0.47% 0.56%

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 12 189 37171 351.5 511 500 104.3
A 0 226 4745 40.69 511 500 104.3
A 12 194 3990 33.45 511 500 104.3
B 3 64 265949 2720.23 505 492 97.6
B 0 219 232065 2373.01 505 492 97.6
B 0 85 31729 320.09 505 492 97.6
C 3 233 455607 3977.63 492 495 114.4
C 3 232 4916 38.64 492 495 114.4
C 13 61 3624 27.35 492 495 114.4
D 12 233 110587 908.54 494 480 121.2
D 15 0 22778 183.99 494 480 121.2
D 2 234 15820 126.58 494 480 121.2

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