ASTROSAT CZTI

Data Quality Report

Orbit 39408

Creation date: 2024-06-27T22:04:11.276018
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/AS1A12_018T01_9000005470_39408cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39408cztM0_level2_quad_clean.evt
Size (bytes)499,662,72094,210,560
Size476.5 MB 89.8 MB
Events in quadrant A3,869,620630,394
Events in quadrant B2,725,528661,377
Events in quadrant C3,742,827611,369
Events in quadrant D7,703,375539,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151143
B0121582
C0149192
D0270122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58662073.528810%
B586650.085237%
C58661121.909308%
D586663210.773952%

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 7207 5867 162 162 2.25% 2.76%
B 7207 5867 0 0 0.00% 0.00%
C 7207 5867 92 92 1.28% 1.57%
D 7207 5867 651 651 9.03% 11.10%

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 13 248 839516 6567.9 632 618 127.7
A 10 83 458391 3584.0 632 618 127.7
A 6 10 104605 814.14 632 618 127.7
B 6 203 148392 1201.41 633 615 123.0
B 5 172 61008 490.99 633 615 123.0
B 12 111 15469 120.76 633 615 123.0
C 15 208 727481 5068.18 615 618 143.4
C 9 187 251121 1746.67 615 618 143.4
C 15 214 246460 1714.17 615 618 143.4
D 12 235 4171049 28699.63 599 581 145.3
D 12 227 507119 3485.81 599 581 145.3
D 13 249 431084 2962.56 599 581 145.3

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