ASTROSAT CZTI

Data Quality Report

Orbit 32818

Creation date: 2024-06-27T20:42:22.299344
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/AS1A11_044T01_9000004732_32818cztM0_level2.evt modeM0/AS1A11_044T01_9000004732_32818cztM0_level2_quad_clean.evt
Size (bytes)542,125,44099,904,320
Size517.0 MB 95.3 MB
Events in quadrant A2,696,072677,573
Events in quadrant B3,840,704664,839
Events in quadrant C2,947,940701,200
Events in quadrant D6,579,728615,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113423
B0147092
C0120242
D0232812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5230531.013384%
B52304448.489484%
C5230661.261950%
D523176814.681705%

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 7113 5231 35 35 0.49% 0.67%
B 7113 5231 319 319 4.48% 6.10%
C 7113 5231 47 47 0.66% 0.90%
D 7114 5232 658 658 9.25% 12.58%

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 17 175129 1440.66 609 598 121.1
A 9 143 84904 695.9 609 598 121.1
A 14 238 56241 459.3 609 598 121.1
B 5 172 1216819 10857.08 591 579 112.0
B 5 200 88145 781.68 591 579 112.0
B 0 219 61243 541.53 591 579 112.0
C 0 10 412995 2980.93 600 606 138.3
C 14 67 68061 487.59 600 606 138.3
C 3 233 48650 347.28 600 606 138.3
D 7 80 1280855 9049.53 570 556 141.5
D 8 195 997732 7048.33 570 556 141.5
D 10 203 500725 3535.34 570 556 141.5

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