ASTROSAT CZTI

Data Quality Report

Orbit 35305

Creation date: 2022-04-09T14:06:28.326603
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/AS1T05_023T01_9000005058_35305cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35305cztM0_level2_quad_clean.evt
Size (bytes)594,385,92052,554,240
Size566.9 MB 50.1 MB
Events in quadrant A3,151,562338,329
Events in quadrant B7,471,406274,052
Events in quadrant C2,861,949324,932
Events in quadrant D4,183,121307,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125483
B0256672
C0112342
D0158632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4923180.365631%
B4923211642.981922%
C4923721.462523%
D49232845.768840%

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 7016 4924 3 3 0.04% 0.06%
B 7016 4923 1594 1594 22.72% 32.38%
C 7016 4924 67 67 0.95% 1.36%
D 7016 4924 266 266 3.79% 5.40%

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 566970 4571.19 628 618 123.9
A 10 83 94449 757.34 628 618 123.9
A 7 3 32562 257.83 628 618 123.9
B 5 236 4056258 41599.0 517 506 97.5
B 5 172 1350786 13849.54 517 506 97.5
B 0 183 15766 156.52 517 506 97.5
C 0 10 279420 2055.85 594 598 135.6
C 15 214 206822 1520.56 594 598 135.6
C 3 233 30497 220.45 594 598 135.6
D 13 249 512573 3645.23 591 575 140.5
D 10 203 374790 2664.27 591 575 140.5
D 8 195 370359 2632.72 591 575 140.5

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