ASTROSAT CZTI

Data Quality Report

Orbit 20230702_A12_025T15_9000005726_level2

Creation date: 2023-07-04T11:21:23.743525
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/AS1A12_025T15_9000005726cztM0_level2.fits modeM0/AS1A12_025T15_9000005726cztM0_level2_quad_clean.evt
Size (bytes)346,633,920358,470,720
Size330.6 MB 341.9 MB
Events in quadrant A2,105,4522,173,467
Events in quadrant B2,025,3742,196,344
Events in quadrant C2,050,9902,062,612
Events in quadrant D1,755,0341,862,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07600
B07600
C07600
D07600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0892290
B0790670
C0757350
D0910150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A373011050.281494%
B373011180.316345%
C37301380.101874%
D3730111353.042814%

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 52365 37301 0 0 0.00% 0.00%
B 52365 37301 0 0 0.00% 0.00%
C 52365 37297 0 0 0.00% 0.00%
D 52365 37284 0 0 0.00% 0.00%

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 7 110 1707 8.68 549 516 137.2
A 9 19 1671 8.42 549 516 137.2
A 0 29 1649 8.26 549 516 137.2
B 2 9 1687 11.04 536 511 106.6
B 3 80 1455 8.86 536 511 106.6
B 5 128 1389 8.24 536 511 106.6
C 1 81 1652 8.16 541 506 140.5
C 3 202 1573 7.59 541 506 140.5
C 1 80 1553 7.45 541 506 140.5
D 10 189 1351 6.6 502 456 135.7
D 7 3 1311 6.3 502 456 135.7
D 3 14 1269 5.99 502 456 135.7

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