ASTROSAT CZTI

Data Quality Report

Orbit 09173

Creation date: 2024-06-27T15:42:16.855779
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/AS1C02_041T02_9000001282_09173cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09173cztM0_level2_quad_clean.evt
Size (bytes)280,509,12039,640,320
Size267.5 MB 37.8 MB
Events in quadrant A2,254,428236,605
Events in quadrant B1,991,191241,684
Events in quadrant C1,786,639235,072
Events in quadrant D2,201,270215,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092342
B083883
C078091
D092071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3833621.617532%
B3832360.939457%
C3833180.469606%
D38331594.148187%

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 4928 3834 28 28 0.57% 0.73%
B 4928 3834 1 1 0.02% 0.03%
C 4928 3834 0 0 0.00% 0.00%
D 4928 3834 133 133 2.70% 3.47%

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 8 5 282712 2959.13 465 456 95.4
A 15 174 79787 831.69 465 456 95.4
A 5 16 36472 377.59 465 456 95.4
B 8 234 78110 845.21 471 460 91.9
B 0 230 21752 231.76 471 460 91.9
B 0 229 13291 139.66 471 460 91.9
C 8 128 6496 56.7 454 456 106.5
C 13 61 3580 29.32 454 456 106.5
C 8 112 3261 26.33 454 456 106.5
D 13 104 386607 3527.37 440 428 109.5
D 12 233 73023 663.09 440 428 109.5
D 2 14 36009 325.0 440 428 109.5

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