ASTROSAT CZTI

Data Quality Report

Orbit 48435

Creation date: 2024-09-11T18:24:10.967165
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/AS1A13_029T01_9000006426_48435cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48435cztM0_level2_quad_clean.evt
Size (bytes)515,773,440112,662,720
Size491.9 MB 107.4 MB
Events in quadrant A7,757,091726,569
Events in quadrant B3,571,952766,700
Events in quadrant C3,295,426742,858
Events in quadrant D3,909,026673,896

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289071
B0156231
C0150981
D0167611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71994756.598139%
B71992503.472705%
C72001351.875000%
D72002523.500000%

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 7804 7200 101 101 1.29% 1.40%
B 7804 7200 21 21 0.27% 0.29%
C 7805 7202 2 2 0.03% 0.03%
D 7805 7202 111 111 1.42% 1.54%

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 10 83 4257830 25298.63 801 784 168.3
A 13 248 393465 2333.61 801 784 168.3
A 13 254 14958 84.23 801 784 168.3
B 12 16 292416 1809.71 804 779 161.2
B 0 198 27697 167.04 804 779 161.2
B 12 111 20763 124.01 804 779 161.2
C 12 2 120738 633.02 800 804 189.5
C 15 208 29243 150.1 800 804 189.5
C 14 67 11757 57.81 800 804 189.5
D 12 233 226381 1121.84 803 777 201.1
D 9 49 178644 884.46 803 777 201.1
D 2 249 151139 747.69 803 777 201.1

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