ASTROSAT CZTI

Data Quality Report

Orbit 35505

Creation date: 2022-04-23T02:07:35.509537
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_097T22_9000005082_35505cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35505cztM0_level2_quad_clean.evt
Size (bytes)372,594,24084,087,360
Size355.3 MB 80.2 MB
Events in quadrant A2,410,788550,801
Events in quadrant B3,033,980551,024
Events in quadrant C2,637,199571,734
Events in quadrant D2,874,758535,251

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104952
B0122372
C0107992
D0119932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4808611.268719%
B48082565.324459%
C4808911.892679%
D48081593.306988%

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 6570 4809 47 47 0.72% 0.98%
B 6570 4809 175 175 2.66% 3.64%
C 6570 4809 54 54 0.82% 1.12%
D 6570 4809 104 104 1.58% 2.16%

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 165180 1487.89 546 536 110.7
A 10 83 125960 1133.46 546 536 110.7
A 13 254 7790 65.55 546 536 110.7
B 5 172 534547 5166.32 543 531 103.4
B 5 200 236969 2287.41 543 531 103.4
B 5 236 68438 656.96 543 531 103.4
C 0 10 251417 1982.95 549 554 126.5
C 15 214 199654 1573.79 549 554 126.5
C 14 67 34776 270.51 549 554 126.5
D 10 199 168868 1306.54 538 525 128.8
D 11 255 152241 1177.5 538 525 128.8
D 10 118 116446 899.69 538 525 128.8

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