ASTROSAT CZTI

Data Quality Report

Orbit 25201

Creation date: 2024-06-27T19:14:59.516012
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/AS1A07_027T01_9000003690_25201cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25201cztM0_level2_quad_clean.evt
Size (bytes)475,306,56079,873,920
Size453.3 MB 76.2 MB
Events in quadrant A3,360,379511,224
Events in quadrant B3,477,529518,322
Events in quadrant C3,376,858480,202
Events in quadrant D3,755,986472,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136880
B0140490
C0137210
D0150860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6250631.008000%
B6250771.232000%
C6250871.392000%
D6250510.816000%

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 7575 6251 0 0 0.00% 0.00%
B 7575 6251 1 1 0.01% 0.02%
C 7575 6251 0 0 0.00% 0.00%
D 7575 6251 15 15 0.20% 0.24%

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 9352 49.81 872 857 170.6
A 0 226 7798 40.7 872 857 170.6
A 3 137 7299 37.77 872 857 170.6
B 0 190 50424 314.3 860 842 157.8
B 3 64 39138 242.76 860 842 157.8
B 12 111 18649 112.88 860 842 157.8
C 14 238 135620 727.65 811 818 185.3
C 7 247 50592 268.68 811 818 185.3
C 2 16 25504 133.25 811 818 185.3
D 8 195 251398 1271.52 828 805 197.1
D 12 233 128581 648.34 828 805 197.1
D 1 52 116421 586.64 828 805 197.1

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