ASTROSAT CZTI

Data Quality Report

Orbit 25478

Creation date: 2024-06-27T19:18:08.016022
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/AS1C05_012T07_9000003718_25478cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25478cztM0_level2_quad_clean.evt
Size (bytes)521,642,880139,910,400
Size497.5 MB 133.4 MB
Events in quadrant A3,322,220966,333
Events in quadrant B3,430,962971,523
Events in quadrant C3,392,584925,925
Events in quadrant D5,184,911894,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140710
B0143340
C0142910
D0198140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6890771.117562%
B6890991.436865%
C68901151.669086%
D68914696.805979%

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 7835 6891 0 0 0.00% 0.00%
B 7835 6891 3 3 0.04% 0.04%
C 7835 6891 1 1 0.01% 0.01%
D 7836 6892 446 446 5.69% 6.47%

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 10466 56.58 861 846 170.0
A 3 137 7581 39.61 861 846 170.0
A 0 226 7450 38.84 861 846 170.0
B 15 33 60973 385.11 846 826 156.2
B 0 190 28398 176.54 846 826 156.2
B 0 229 22624 139.57 846 826 156.2
C 14 238 133149 699.54 818 823 189.2
C 7 87 39664 205.33 818 823 189.2
C 2 16 31109 160.11 818 823 189.2
D 1 52 1805974 9184.45 822 795 196.5
D 8 195 127473 644.52 822 795 196.5
D 2 244 60503 303.78 822 795 196.5

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