ASTROSAT CZTI

Data Quality Report

Orbit 28936

Creation date: 2024-06-27T19:58:15.520030
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/AS1A10_082T04_9000004150_28936cztM0_level2.evt modeM0/AS1A10_082T04_9000004150_28936cztM0_level2_quad_clean.evt
Size (bytes)513,720,000111,070,080
Size489.9 MB 105.9 MB
Events in quadrant A3,163,029736,408
Events in quadrant B3,241,763768,951
Events in quadrant C3,684,587728,224
Events in quadrant D5,039,398688,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133692
B0135512
C0150842
D0193592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6321310.490429%
B6321550.870115%
C63211402.214839%
D63213535.584559%

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 7636 6322 0 0 0.00% 0.00%
B 7636 6322 0 0 0.00% 0.00%
C 7636 6322 0 0 0.00% 0.00%
D 7636 6322 301 301 3.94% 4.76%

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 10569 59.87 818 804 163.1
A 5 98 8435 46.79 818 804 163.1
A 3 137 7753 42.61 818 804 163.1
B 12 111 18436 114.65 824 805 153.8
B 11 111 16745 103.66 824 805 153.8
B 14 111 15741 97.13 824 805 153.8
C 3 233 400205 2181.07 790 798 183.1
C 14 238 149118 809.94 790 798 183.1
C 14 254 27410 145.32 790 798 183.1
D 8 195 1806180 9757.28 775 755 185.0
D 2 250 202639 1091.07 775 755 185.0
D 1 52 95243 510.65 775 755 185.0

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