ASTROSAT CZTI

Data Quality Report

Orbit 41715

Creation date: 2024-06-27T22:31:56.505811
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/AS1A12_077T12_9000005692_41715cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41715cztM0_level2_quad_clean.evt
Size (bytes)1,294,061,760328,383,360
Size1.2 GB 313.2 MB
Events in quadrant A10,869,4992,241,176
Events in quadrant B9,550,1782,298,226
Events in quadrant C10,928,6482,096,292
Events in quadrant D14,967,3781,895,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443076
B0426045
C0451765
D0589545

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04200
C04200
D04200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20496620.302498%
B20497520.253696%
C204974902.390594%
D2049710385.064156%

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 27363 20501 30 30 0.11% 0.15%
B 27364 20502 19 19 0.07% 0.09%
C 27364 20502 494 494 1.81% 2.41%
D 27364 20502 1013 1013 3.70% 4.94%

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 1762033 3770.18 2294 2251 466.8
A 2 79 211851 449.05 2294 2251 466.8
A 13 254 28757 56.79 2294 2251 466.8
B 0 245 221626 495.54 2272 2205 442.8
B 7 202 114494 253.59 2272 2205 442.8
B 15 35 97762 215.81 2272 2205 442.8
C 0 10 1487472 2888.88 2206 2223 514.1
C 15 214 821216 1592.98 2206 2223 514.1
C 13 61 14687 24.24 2206 2223 514.1
D 13 249 1915184 3612.25 2184 2127 529.6
D 12 79 1627015 3068.12 2184 2127 529.6
D 1 47 1358034 2560.23 2184 2127 529.6

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