ASTROSAT CZTI

Data Quality Report

Orbit 34678

Creation date: 2022-07-18T17:19:30.292940
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/AS1T04_078T01_9000004962_34678cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34678cztM0_level2_quad_clean.evt
Size (bytes)518,944,32071,087,040
Size494.9 MB 67.8 MB
Events in quadrant A3,219,327447,283
Events in quadrant B4,335,944434,569
Events in quadrant C2,810,826456,200
Events in quadrant D4,975,687427,361

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131183
B0165352
C0116952
D0185982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5530961.735986%
B55304748.571429%
C5530170.307414%
D55302815.081374%

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 7204 5531 75 75 1.04% 1.36%
B 7204 5531 346 346 4.80% 6.26%
C 7204 5531 10 10 0.14% 0.18%
D 7204 5531 189 189 2.62% 3.42%

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 547790 4250.86 633 620 128.7
A 10 83 45229 346.56 633 620 128.7
A 9 143 42076 322.06 633 620 128.7
B 5 172 1182557 9924.3 614 597 119.1
B 5 255 352264 2952.76 614 597 119.1
B 0 190 237428 1988.54 614 597 119.1
C 15 214 235610 1635.16 619 624 143.7
C 0 10 52881 363.63 619 624 143.7
C 14 67 51970 357.29 619 624 143.7
D 8 195 1589614 10565.81 607 589 150.4
D 2 249 449916 2987.68 607 589 150.4
D 12 233 103109 681.68 607 589 150.4

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