ASTROSAT CZTI

Data Quality Report

Orbit 20220410_A11_046T08_9000005062_level2

Creation date: 2022-04-23T15:04:01.328559
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_046T08_9000005062cztM0_level2_bc.evt modeM0/AS1A11_046T08_9000005062cztM0_level2_quad_clean.evt
Size (bytes)2,213,464,320322,220,160
Size2.1 GB 307.3 MB
Events in quadrant A33,230,4451,325,557
Events in quadrant B16,805,8282,062,582
Events in quadrant C7,699,0582,535,507
Events in quadrant D7,915,9832,425,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04120
B04120
C04120
D04120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01559480
B01046120
C0522980
D0542280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0670
B0670
C0670
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A203151734285.365493%
B20315827840.748216%
C203155842.874723%
D203157553.716466%

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 26855 20276 3202 3202 11.92% 15.79%
B 26854 20291 67 67 0.25% 0.33%
C 26854 20312 93 93 0.35% 0.46%
D 26853 20312 33 33 0.12% 0.16%

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 15 169 30642358 234360.87 575 568 130.7
A 10 83 184691 1408.25 575 568 130.7
A 8 192 47841 361.56 575 568 130.7
B 5 236 8921352 52402.61 836 819 170.2
B 5 172 3966718 23297.2 836 819 170.2
B 5 200 339181 1987.67 836 819 170.2
C 0 10 1481149 6409.72 999 993 230.9
C 3 233 1478357 6397.62 999 993 230.9
C 15 214 789788 3415.82 999 993 230.9
D 8 195 846221 3513.63 1008 980 240.6
D 10 118 716605 2974.82 1008 980 240.6
D 12 233 598730 2484.82 1008 980 240.6

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