ASTROSAT CZTI

Data Quality Report

Orbit 39195

Creation date: 2024-06-27T22:01:39.112890
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_054T02_9000005444_39195cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39195cztM0_level2_quad_clean.evt
Size (bytes)410,993,28093,314,880
Size392.0 MB 89.0 MB
Events in quadrant A3,060,532640,307
Events in quadrant B2,424,727652,976
Events in quadrant C2,599,184616,234
Events in quadrant D6,677,144509,685

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128063
B0116302
C0117012
D0238982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5810410.705680%
B581060.103270%
C581050.086059%
D581089015.318417%

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 7392 5811 34 34 0.46% 0.59%
B 7392 5811 0 0 0.00% 0.00%
C 7392 5811 0 0 0.00% 0.00%
D 7392 5811 727 727 9.83% 12.51%

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 451967 3580.46 618 607 126.1
A 9 143 172308 1362.04 618 607 126.1
A 2 79 28528 221.49 618 607 126.1
B 12 111 15069 121.05 615 599 119.5
B 11 111 13762 110.12 615 599 119.5
B 14 111 13295 106.21 615 599 119.5
C 15 214 244114 1727.59 601 603 141.0
C 0 10 5768 36.64 601 603 141.0
C 5 251 5101 31.91 601 603 141.0
D 12 235 3760034 26625.76 572 555 141.2
D 2 249 530829 3755.56 572 555 141.2
D 5 222 88908 625.74 572 555 141.2

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