ASTROSAT CZTI

Data Quality Report

Orbit 44200

Creation date: 2024-06-27T23:00:27.107879
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_074T09_9000005968_44200cztM0_level2.fits modeM0/AS1A13_074T09_9000005968_44200cztM0_level2_quad_clean.evt
Size (bytes)573,298,560108,348,480
Size546.7 MB 103.3 MB
Events in quadrant A6,492,932678,253
Events in quadrant B4,296,873773,757
Events in quadrant C3,311,000767,021
Events in quadrant D6,616,758608,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239172
B0170052
C0141893
D0241292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6498101715.650970%
B64983695.678670%
C6497961.477605%
D649797014.929968%

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 7633 6499 576 576 7.55% 8.86%
B 7633 6499 118 118 1.55% 1.82%
C 7632 6498 10 10 0.13% 0.15%
D 7632 6498 737 737 9.66% 11.34%

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 15 223 1826166 11463.79 767 753 159.2
A 10 83 1588442 9970.86 767 753 159.2
A 0 243 49197 304.23 767 753 159.2
B 5 172 297870 1937.1 789 768 153.4
B 5 255 246816 1604.23 789 768 153.4
B 0 219 132334 857.81 789 768 153.4
C 14 254 122492 658.12 790 796 184.9
C 4 254 56224 299.75 790 796 184.9
C 3 233 30894 162.77 790 796 184.9
D 1 52 1455881 7779.13 727 705 187.1
D 2 249 597747 3191.69 727 705 187.1
D 12 16 450117 2402.48 727 705 187.1

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