ASTROSAT CZTI

Data Quality Report

Orbit 26436

Creation date: 2024-06-27T19:29:00.367418
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/AS1A09_108T02_9000003822_26436cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26436cztM0_level2_quad_clean.evt
Size (bytes)571,276,800109,774,080
Size544.8 MB 104.7 MB
Events in quadrant A3,663,518704,416
Events in quadrant B3,615,854723,419
Events in quadrant C3,810,853697,674
Events in quadrant D5,689,757664,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160240
B0158000
C0162650
D0221670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7684771.002082%
B76851061.379310%
C76851221.587508%
D76855126.662329%

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 7864 7685 4 4 0.05% 0.05%
B 7865 7686 1 1 0.01% 0.01%
C 7865 7686 6 6 0.08% 0.08%
D 7865 7686 407 407 5.17% 5.30%

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 0 13 118405 632.03 917 896 185.9
A 13 254 10326 50.72 917 896 185.9
A 3 137 9142 44.35 917 896 185.9
B 12 111 22018 118.98 920 898 177.5
B 11 111 19768 106.31 920 898 177.5
B 14 111 17735 94.85 920 898 177.5
C 14 238 139138 662.59 888 893 208.6
C 14 176 101453 481.97 888 893 208.6
C 3 233 96293 457.24 888 893 208.6
D 1 52 1091655 5282.56 869 850 206.5
D 11 176 935192 4524.84 869 850 206.5
D 7 80 333196 1609.49 869 850 206.5

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