ASTROSAT CZTI

Data Quality Report

Orbit 26765

Creation date: 2024-06-27T19:32:35.547154
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/AS1A09_044T02_9000003852_26765cztM0_level2.evt modeM0/AS1A09_044T02_9000003852_26765cztM0_level2_quad_clean.evt
Size (bytes)894,404,16086,904,000
Size853.0 MB 82.9 MB
Events in quadrant A3,841,685647,864
Events in quadrant B7,618,237498,134
Events in quadrant C3,757,691614,447
Events in quadrant D11,438,372423,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156220
B0269500
C0152950
D0384200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63941522.377229%
B6394192030.028151%
C63942023.159212%
D6393339453.089316%

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 7634 6395 2 2 0.03% 0.03%
B 7634 6395 1647 1647 21.57% 25.75%
C 7634 6395 7 7 0.09% 0.11%
D 7633 6393 2492 2492 32.65% 38.98%

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 0 13 256980 1404.05 927 911 182.4
A 9 130 9753 48.48 927 911 182.4
A 13 254 9496 47.07 927 911 182.4
B 0 189 4456739 29784.4 801 784 149.6
B 0 190 21104 135.82 801 784 149.6
B 12 111 17642 112.68 801 784 149.6
C 14 238 141301 698.06 869 874 201.2
C 2 16 132282 653.22 869 874 201.2
C 10 22 83213 409.3 869 874 201.2
D 7 80 6761621 38778.5 700 683 174.3
D 15 36 636823 3648.69 700 683 174.3
D 1 52 475476 2723.26 700 683 174.3

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