ASTROSAT CZTI

Data Quality Report

Orbit 37741

Creation date: 2024-06-27T21:43:50.445313
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_106T02_9000005344_37741cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37741cztM0_level2_quad_clean.evt
Size (bytes)410,518,08073,768,320
Size391.5 MB 70.4 MB
Events in quadrant A2,713,232469,267
Events in quadrant B2,977,401463,751
Events in quadrant C2,897,975475,112
Events in quadrant D3,482,910453,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114653
B0124332
C0118282
D0139712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5301180.339559%
B53011282.414639%
C53011292.433503%
D53011532.886248%

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 7063 5300 5 5 0.07% 0.09%
B 7064 5302 109 109 1.54% 2.06%
C 7063 5300 116 116 1.64% 2.19%
D 7063 5301 158 158 2.24% 2.98%

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 341018 2829.0 595 584 120.3
A 15 222 23417 189.74 595 584 120.3
A 12 189 21073 170.26 595 584 120.3
B 4 81 238499 2115.29 587 571 112.5
B 5 255 187393 1660.93 587 571 112.5
B 0 229 56271 495.2 587 571 112.5
C 0 10 250697 1857.93 579 584 134.6
C 15 214 225230 1668.75 579 584 134.6
C 14 254 110275 814.82 579 584 134.6
D 2 249 674921 4472.83 575 564 150.8
D 2 153 168061 1110.96 575 564 150.8
D 13 249 158822 1049.68 575 564 150.8

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