ASTROSAT CZTI

Data Quality Report

Orbit 42489

Creation date: 2024-06-27T22:40:46.538565
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/AS1C07_001T10_9000005806_42489cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42489cztM0_level2_quad_clean.evt
Size (bytes)315,000,00085,052,160
Size300.4 MB 81.1 MB
Events in quadrant A2,811,017593,000
Events in quadrant B3,458,109554,280
Events in quadrant C2,356,319561,430
Events in quadrant D2,652,936523,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111842
B0135502
C0100342
D0112822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489780.163365%
B48974048.249949%
C489760.122524%
D4897992.021646%

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 7018 4898 5 5 0.07% 0.10%
B 7018 4898 308 308 4.39% 6.29%
C 7018 4898 2 2 0.03% 0.04%
D 7018 4898 78 78 1.11% 1.59%

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 553897 4924.73 551 539 112.4
A 12 189 79775 705.18 551 539 112.4
A 7 3 19511 168.85 551 539 112.4
B 5 255 1239746 12488.39 523 510 99.2
B 5 172 53229 531.28 523 510 99.2
B 15 33 34580 343.34 523 510 99.2
C 15 214 209143 1738.53 525 528 120.0
C 14 254 52700 434.78 525 528 120.0
C 4 254 24120 196.61 525 528 120.0
D 12 233 189104 1457.97 534 520 129.3
D 10 199 88377 679.24 534 520 129.3
D 5 171 65276 500.64 534 520 129.3

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