ASTROSAT CZTI

Data Quality Report

Orbit 41374

Creation date: 2024-06-27T22:28:17.069242
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_035T01_9000005660_41374cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41374cztM0_level2_quad_clean.evt
Size (bytes)351,826,56095,348,160
Size335.5 MB 90.9 MB
Events in quadrant A2,939,641644,623
Events in quadrant B2,583,730667,778
Events in quadrant C3,377,698613,866
Events in quadrant D3,696,068578,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120103
B0113082
C0132432
D0146452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5475120.219178%
B547580.146119%
C54752504.566210%
D54751923.506849%

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 9660 5477 5 5 0.05% 0.09%
B 9660 5477 4 4 0.04% 0.07%
C 9660 5477 246 246 2.55% 4.49%
D 9660 5477 176 176 1.82% 3.21%

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 509020 3956.25 625 612 128.5
A 12 189 9596 69.91 625 612 128.5
A 13 254 7876 56.53 625 612 128.5
B 0 190 69572 573.83 622 604 120.2
B 5 255 31040 253.23 622 604 120.2
B 4 81 26005 211.34 622 604 120.2
C 0 10 643593 4605.67 600 605 139.6
C 15 214 226522 1618.22 600 605 139.6
C 2 16 167167 1193.07 600 605 139.6
D 1 47 500822 3378.05 613 598 148.1
D 13 249 369219 2489.33 613 598 148.1
D 1 52 325602 2194.78 613 598 148.1

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