ASTROSAT CZTI

Data Quality Report

Orbit 09423

Creation date: 2024-06-27T15:46:08.695014
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/AS1G07_030T01_9000001338_09423cztM0_level2.evt modeM0/AS1G07_030T01_9000001338_09423cztM0_level2_quad_clean.evt
Size (bytes)2,144,289,600277,156,800
Size2.0 GB 264.3 MB
Events in quadrant A13,184,6181,866,948
Events in quadrant B10,499,9841,902,225
Events in quadrant C29,317,3581,349,675
Events in quadrant D10,500,3521,803,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04340
D04340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0533399
B0449004
C01015194
D0451514

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213473941.845693%
B213492701.264696%
C21349783036.676191%
D213492321.086702%

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 26214 21353 46 46 0.18% 0.22%
B 26214 21353 1 1 0.00% 0.00%
C 26214 21350 5542 5542 21.14% 25.96%
D 26214 21353 14 14 0.05% 0.07%

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 8 5 2542581 4715.58 2683 2632 538.6
A 4 2 189948 347.76 2683 2632 538.6
A 1 162 60097 106.69 2683 2632 538.6
B 12 111 56411 107.06 2695 2639 502.3
B 11 111 45774 85.88 2695 2639 502.3
B 14 111 34545 63.52 2695 2639 502.3
C 4 254 21164617 45359.15 2051 2063 466.6
C 9 68 73381 152.86 2051 2063 466.6
C 14 234 50301 103.39 2051 2063 466.6
D 8 195 320249 486.56 2611 2551 652.9
D 2 234 85825 127.54 2611 2551 652.9
D 10 172 64683 95.16 2611 2551 652.9

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