ASTROSAT CZTI

Data Quality Report

Orbit 34909

Creation date: 2022-03-13T21:53:15.651497
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_065T21_9000005000_34909cztM0_level2.evt modeM0/AS1A11_065T21_9000005000_34909cztM0_level2_quad_clean.evt
Size (bytes)423,198,72088,689,600
Size403.6 MB 84.6 MB
Events in quadrant A2,478,529594,522
Events in quadrant B3,387,544582,873
Events in quadrant C2,671,160585,993
Events in quadrant D3,918,677550,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109112
B0135821
C0110411
D0153431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309100.188359%
B53093065.763797%
C5309200.376719%
D53091482.787719%

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 6922 5310 1 1 0.01% 0.02%
B 6922 5310 228 228 3.29% 4.29%
C 6922 5310 15 15 0.22% 0.28%
D 6922 5310 126 126 1.82% 2.37%

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 41309 324.33 620 607 125.5
A 13 6 15603 119.49 620 607 125.5
A 15 169 13467 102.47 620 607 125.5
B 5 172 890174 7636.58 600 583 116.5
B 5 255 64250 546.54 600 583 116.5
B 0 190 29136 245.11 600 583 116.5
C 15 214 220146 1554.4 605 610 141.2
C 0 10 58720 411.44 605 610 141.2
C 14 67 20978 144.21 605 610 141.2
D 8 195 757387 5186.75 597 580 145.9
D 13 249 365963 2504.14 597 580 145.9
D 1 52 110449 752.98 597 580 145.9

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