ASTROSAT CZTI

Data Quality Report

Orbit 19424

Creation date: 2024-06-27T18:02:46.003059
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/AS1A05_212T09_9000002886_19424cztM0_level2.evt modeM0/AS1A05_212T09_9000002886_19424cztM0_level2_quad_clean.evt
Size (bytes)444,787,20096,189,120
Size424.2 MB 91.7 MB
Events in quadrant A3,246,764640,167
Events in quadrant B3,246,276641,495
Events in quadrant C3,163,844603,762
Events in quadrant D3,401,523603,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132432
B0131421
C0129751
D0137901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6064741.220317%
B6064801.319261%
C6065931.533388%
D6065801.319044%

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 7354 6064 1 1 0.01% 0.02%
B 7354 6064 8 8 0.11% 0.13%
C 7355 6065 0 0 0.00% 0.00%
D 7355 6065 19 19 0.26% 0.31%

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 61752 369.96 824 810 164.7
A 12 96 11619 65.62 824 810 164.7
A 13 254 8834 48.71 824 810 164.7
B 3 64 38549 248.59 805 786 151.9
B 0 198 22134 140.53 805 786 151.9
B 7 220 17337 108.96 805 786 151.9
C 14 238 122808 682.93 770 776 178.7
C 3 233 35223 192.78 770 776 178.7
C 13 61 5397 25.86 770 776 178.7
D 1 52 243501 1246.96 802 780 194.6
D 7 238 54796 277.5 802 780 194.6
D 7 96 48076 242.98 802 780 194.6

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