ASTROSAT CZTI

Data Quality Report

Orbit 16009

Creation date: 2024-06-27T17:16:28.892019
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/AS1T02_090T01_9000002360_16009cztM0_level2.evt modeM0/AS1T02_090T01_9000002360_16009cztM0_level2_quad_clean.evt
Size (bytes)497,589,12078,756,480
Size474.5 MB 75.1 MB
Events in quadrant A3,582,921494,574
Events in quadrant B3,866,906498,019
Events in quadrant C3,625,416484,237
Events in quadrant D3,571,887473,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145373
B0156242
C0148572
D0146102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62261201.927401%
B62261812.907164%
C62261482.377128%
D62261322.120141%

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 7562 6227 1 1 0.01% 0.02%
B 7562 6227 54 54 0.71% 0.87%
C 7562 6227 0 0 0.00% 0.00%
D 7562 6227 38 38 0.50% 0.61%

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 14 235 113584 636.88 880 865 177.0
A 15 157 63555 354.21 880 865 177.0
A 13 210 18972 102.31 880 865 177.0
B 5 65 145716 886.52 876 859 163.4
B 7 220 130654 794.34 876 859 163.4
B 4 216 47090 282.93 876 859 163.4
C 3 233 169598 855.82 852 862 197.2
C 14 238 131480 662.48 852 862 197.2
C 13 61 6180 26.97 852 862 197.2
D 12 218 223633 1057.72 865 843 210.6
D 2 234 25306 116.14 865 843 210.6
D 2 152 21676 98.91 865 843 210.6

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