ASTROSAT CZTI

Data Quality Report

Orbit 25686

Creation date: 2024-06-27T19:20:23.919610
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_043T01_9000003744_25686cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25686cztM0_level2_quad_clean.evt
Size (bytes)941,529,600171,518,400
Size897.9 MB 163.6 MB
Events in quadrant A6,221,4571,119,731
Events in quadrant B5,970,9161,134,496
Events in quadrant C5,742,1171,070,659
Events in quadrant D9,763,5801,034,709

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255820
B0252040
C0247430
D0376550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120781411.167412%
B120781291.068058%
C120791751.448795%
D120793983.294975%

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 13308 12078 0 0 0.00% 0.00%
B 13308 12080 1 1 0.01% 0.01%
C 13309 12079 0 0 0.00% 0.00%
D 13309 12079 210 210 1.58% 1.74%

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 8 192 492349 1642.59 1482 1451 298.9
A 13 254 18396 56.7 1482 1451 298.9
A 3 137 13809 41.35 1482 1451 298.9
B 15 33 129983 454.38 1468 1433 282.9
B 0 245 60475 208.69 1468 1433 282.9
B 12 111 34759 117.8 1468 1433 282.9
C 14 238 221801 666.96 1408 1413 330.4
C 3 233 33689 97.68 1408 1413 330.4
C 13 61 9899 25.68 1408 1413 330.4
D 1 52 3131061 9051.35 1421 1379 345.8
D 8 195 741652 2140.94 1421 1379 345.8
D 13 104 187547 538.41 1421 1379 345.8

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