ASTROSAT CZTI

Data Quality Report

Orbit 08418

Creation date: 2024-06-27T15:32:29.315895
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/AS1A02_158T01_9000001184_08418cztM0_level2.evt modeM0/AS1A02_158T01_9000001184_08418cztM0_level2_quad_clean.evt
Size (bytes)464,382,72092,983,680
Size442.9 MB 88.7 MB
Events in quadrant A3,152,860589,428
Events in quadrant B3,276,924604,941
Events in quadrant C3,108,305594,408
Events in quadrant D4,068,638558,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138993
B0141972
C0138054
D0167052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6723180.267738%
B6723360.535475%
C6722270.401666%
D67231752.603005%

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 7618 6724 1 1 0.01% 0.01%
B 7618 6724 1 1 0.01% 0.01%
C 7618 6724 10 10 0.13% 0.15%
D 7618 6724 163 163 2.14% 2.42%

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 5 16 75141 451.56 791 771 164.7
A 13 14 15036 86.61 791 771 164.7
A 13 251 12499 71.21 791 771 164.7
B 0 214 93334 603.54 798 777 153.4
B 4 81 32861 209.21 798 777 153.4
B 5 255 17143 106.72 798 777 153.4
C 1 16 85544 467.93 775 776 181.2
C 13 61 5909 28.33 775 776 181.2
C 3 202 1998 6.75 775 776 181.2
D 12 227 738027 3962.23 761 738 186.1
D 1 52 207107 1109.04 761 738 186.1
D 14 34 85307 454.48 761 738 186.1

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