ASTROSAT CZTI

Data Quality Report

Orbit 34361

Creation date: 2022-02-05T10:25:40.345451
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/AS1A05_019T01_9000004906_34361cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34361cztM0_level2_quad_clean.evt
Size (bytes)714,061,44081,069,120
Size681.0 MB 77.3 MB
Events in quadrant A2,576,945592,966
Events in quadrant B3,238,134589,014
Events in quadrant C5,057,540529,374
Events in quadrant D10,386,578363,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112122
B0130651
C0184801
D0344321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541870.129199%
B5418821.513474%
C5418102018.826135%
D5418332561.369509%

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 7150 5419 3 3 0.04% 0.06%
B 7150 5419 47 47 0.66% 0.87%
C 7150 5419 730 730 10.21% 13.47%
D 7150 5419 3194 3194 44.67% 58.94%

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 32184 243.51 649 638 129.5
A 9 143 25659 193.14 649 638 129.5
A 13 6 15387 113.85 649 638 129.5
B 5 172 261018 2124.32 637 620 122.6
B 0 190 232097 1888.38 637 620 122.6
B 4 251 83678 677.58 637 620 122.6
C 4 254 2554226 20317.07 546 549 125.7
C 15 214 203737 1616.57 546 549 125.7
C 3 233 63661 502.12 546 549 125.7
D 7 223 7604749 71219.85 425 411 106.8
D 1 52 489000 4575.97 425 411 106.8
D 8 195 311069 2909.53 425 411 106.8

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