ASTROSAT CZTI

Data Quality Report

Orbit 29837

Creation date: 2024-06-27T20:08:12.495474
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_291T01_9000004278_29837cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29837cztM0_level2_quad_clean.evt
Size (bytes)711,095,040109,676,160
Size678.2 MB 104.6 MB
Events in quadrant A3,698,305737,144
Events in quadrant B5,953,718736,971
Events in quadrant C3,762,965699,222
Events in quadrant D7,608,841621,674

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158031
B0230381
C0159231
D0276451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7561290.383547%
B75611391.838381%
C75613444.549663%
D7561140218.542521%

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 7786 7562 1 1 0.01% 0.01%
B 7786 7562 1 1 0.01% 0.01%
C 7786 7562 3 3 0.04% 0.04%
D 7786 7562 1073 1073 13.78% 14.19%

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 14 238 99138 530.07 927 908 185.3
A 13 254 14255 72.02 927 908 185.3
A 3 137 9370 45.66 927 908 185.3
B 6 159 2246239 12650.04 923 900 177.5
B 0 189 53087 294.02 923 900 177.5
B 12 111 21625 116.76 923 900 177.5
C 14 238 203468 1009.51 864 870 200.7
C 14 254 96281 475.41 864 870 200.7
C 10 22 41136 200.64 864 870 200.7
D 7 80 3792452 19622.83 810 788 193.2
D 8 195 476045 2459.58 810 788 193.2
D 2 250 171698 884.5 810 788 193.2

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