ASTROSAT CZTI

Data Quality Report

Orbit 23770

Creation date: 2024-06-27T18:58:33.633941
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/AS1T03_180T01_9000003524_23770cztM0_level2.evt modeM0/AS1T03_180T01_9000003524_23770cztM0_level2_quad_clean.evt
Size (bytes)491,005,440104,852,160
Size468.3 MB 100.0 MB
Events in quadrant A3,246,831679,447
Events in quadrant B3,417,831697,243
Events in quadrant C3,521,837673,636
Events in quadrant D4,220,838650,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140212
B0143092
C0145342
D0169962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6812200.293600%
B6812470.689959%
C68121351.981797%
D68121041.526718%

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 7642 6813 0 0 0.00% 0.00%
B 7642 6812 0 0 0.00% 0.00%
C 7642 6812 53 53 0.69% 0.78%
D 7642 6813 53 53 0.69% 0.78%

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 12184 67.52 839 821 168.3
A 14 235 10108 55.19 839 821 168.3
A 3 137 7352 38.81 839 821 168.3
B 0 229 40886 249.28 846 826 160.7
B 0 189 34843 211.68 846 826 160.7
B 12 111 19392 115.53 846 826 160.7
C 0 10 203536 1063.45 814 822 190.6
C 14 238 128266 668.58 814 822 190.6
C 7 247 11582 56.45 814 822 190.6
D 1 52 429620 2156.19 818 796 198.9
D 8 195 380400 1908.7 818 796 198.9
D 7 238 170084 851.2 818 796 198.9

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