ASTROSAT CZTI

Data Quality Report

Orbit 07274

Creation date: 2024-06-27T15:17:51.112314
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/AS1G06_154T03_9000000996_07274cztM0_level2.evt modeM0/AS1G06_154T03_9000000996_07274cztM0_level2_quad_clean.evt
Size (bytes)269,265,60042,333,120
Size256.8 MB 40.4 MB
Events in quadrant A2,019,386248,860
Events in quadrant B1,951,247252,409
Events in quadrant C1,934,521250,689
Events in quadrant D1,971,512242,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086031
B084610
C085300
D087600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4072611.498035%
B4072681.669941%
C4072591.448919%
D4072611.498035%

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 4662 4072 1 1 0.02% 0.02%
B 4662 4072 0 0 0.00% 0.00%
C 4662 4072 2 2 0.04% 0.05%
D 4662 4072 2 2 0.04% 0.05%

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 15 142740 1404.09 486 474 101.3
A 0 226 4572 40.45 486 474 101.3
A 12 194 4407 38.82 486 474 101.3
B 0 214 20583 206.49 490 477 97.4
B 12 111 9835 96.11 490 477 97.4
B 11 111 8109 78.38 490 477 97.4
C 7 247 82171 725.63 474 475 112.6
C 14 67 3877 30.22 474 475 112.6
C 13 61 3595 27.71 474 475 112.6
D 1 52 76828 644.64 476 460 118.5
D 2 216 28233 234.44 476 460 118.5
D 12 110 24154 200.01 476 460 118.5

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