ASTROSAT CZTI

Data Quality Report

Orbit 05502

Creation date: 2024-06-27T14:56:00.661735
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/AS1A02_162T01_9000000704_05502cztM0_level2.evt modeM0/AS1A02_162T01_9000000704_05502cztM0_level2_quad_clean.evt
Size (bytes)678,994,56074,589,120
Size647.5 MB 71.1 MB
Events in quadrant A3,016,377469,055
Events in quadrant B4,549,432463,266
Events in quadrant C6,964,672429,486
Events in quadrant D5,581,923431,102

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137553
B0179684
C0252754
D0210758

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6677590.883630%
B66762293.430198%
C6676144021.569802%
D66753234.838951%

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 7652 6678 6 6 0.08% 0.09%
B 7652 6678 53 53 0.69% 0.79%
C 7652 6677 1206 1206 15.76% 18.06%
D 7652 6678 202 202 2.64% 3.02%

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 15 174 18850 112.6 775 759 160.7
A 0 50 14518 85.64 775 759 160.7
A 0 226 7679 43.07 775 759 160.7
B 15 255 1145758 7700.76 779 761 148.7
B 15 204 166155 1112.37 779 761 148.7
B 0 219 74705 497.32 779 761 148.7
C 1 241 2695391 17789.51 655 658 151.5
C 9 247 1645911 10861.28 655 658 151.5
C 1 16 59727 389.95 655 658 151.5
D 2 63 2190115 12215.73 730 708 179.2
D 2 152 212523 1181.81 730 708 179.2
D 2 136 116089 643.76 730 708 179.2

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