ASTROSAT CZTI

Data Quality Report

Orbit 28948

Creation date: 2024-06-27T19:58:24.180856
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/AS1A10_123T08_9000004152_28948cztM0_level2.evt modeM0/AS1A10_123T08_9000004152_28948cztM0_level2_quad_clean.evt
Size (bytes)689,800,320101,917,440
Size657.8 MB 97.2 MB
Events in quadrant A3,165,120706,773
Events in quadrant B3,292,380735,905
Events in quadrant C3,458,670703,805
Events in quadrant D10,551,292502,742

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135733
B0139052
C0144582
D0356692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254470.751519%
B6254600.959386%
C62541963.133994%
D6254303248.480972%

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 7479 6257 0 0 0.00% 0.00%
B 7479 6257 1 1 0.01% 0.02%
C 7479 6257 0 0 0.00% 0.00%
D 7479 6257 2930 2930 39.18% 46.83%

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 13 254 11183 64.35 818 803 161.3
A 3 137 7746 43.04 818 803 161.3
A 0 226 6914 37.89 818 803 161.3
B 15 33 20082 124.14 825 805 155.3
B 12 111 18190 111.96 825 805 155.3
B 10 245 18113 111.46 825 805 155.3
C 14 238 152939 819.77 800 806 185.6
C 3 233 135363 725.06 800 806 185.6
C 14 254 36836 194.15 800 806 185.6
D 8 195 5078149 33431.45 644 626 151.9
D 1 52 1516634 9981.7 644 626 151.9
D 7 80 1139600 7499.24 644 626 151.9

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