ASTROSAT CZTI

Data Quality Report

Orbit 23686

Creation date: 2024-06-27T18:57:32.268630
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_012T03_9000003500_23686cztM0_level2.evt modeM0/AS1C05_012T03_9000003500_23686cztM0_level2_quad_clean.evt
Size (bytes)458,352,000105,399,360
Size437.1 MB 100.5 MB
Events in quadrant A3,104,609686,588
Events in quadrant B3,248,733704,897
Events in quadrant C3,126,451674,285
Events in quadrant D3,934,013647,256

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01402
B01400
C01402
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139569
B01414318
C01397723
D01640529

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68801001.453488%
B6876941.367074%
C68741041.512947%
D68752393.476364%

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 7203 6883 0 0 0.00% 0.00%
B 7203 6880 2 2 0.03% 0.03%
C 7203 6879 0 0 0.00% 0.00%
D 7204 6880 155 155 2.15% 2.25%

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 12337 70.34 804 786 164.2
A 3 137 7321 39.79 804 786 164.2
A 0 226 7061 38.21 804 786 164.2
B 15 33 29531 188.3 800 778 152.7
B 0 189 26486 168.36 800 778 152.7
B 0 229 18690 117.31 800 778 152.7
C 14 238 122968 681.28 764 767 179.4
C 9 54 8111 40.94 764 767 179.4
C 3 233 7518 37.64 764 767 179.4
D 1 52 843953 4480.98 767 744 188.2
D 12 233 84894 447.19 767 744 188.2
D 8 195 53847 282.2 767 744 188.2

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