ASTROSAT CZTI

Data Quality Report

Orbit 14783

Creation date: 2024-06-27T16:59:39.129243
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/AS1A04_022T02_9000002184_14783cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14783cztM0_level2_quad_clean.evt
Size (bytes)591,782,40097,012,800
Size564.4 MB 92.5 MB
Events in quadrant A4,227,990611,912
Events in quadrant B4,786,550608,854
Events in quadrant C4,754,555601,965
Events in quadrant D3,641,114589,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177142
B0194741
C0193481
D0161201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75601902.513228%
B75602713.584656%
C7560690.912698%
D7560740.978836%

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 7821 7563 121 121 1.55% 1.60%
B 7821 7563 116 116 1.48% 1.53%
C 7821 7563 0 0 0.00% 0.00%
D 7821 7563 52 52 0.66% 0.69%

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 14 237 554211 2987.16 900 880 185.2
A 0 23 108445 580.69 900 880 185.2
A 12 189 78373 418.35 900 880 185.2
B 3 64 846181 4923.72 902 878 171.7
B 0 219 192521 1116.28 902 878 171.7
B 0 229 43735 249.63 902 878 171.7
C 3 233 1270683 6237.46 879 879 203.6
C 3 232 22149 104.48 879 879 203.6
C 0 207 13823 63.58 879 879 203.6
D 15 0 225328 1035.65 886 857 216.7
D 2 234 31650 142.07 886 857 216.7
D 10 70 29740 133.26 886 857 216.7

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