ASTROSAT CZTI

Data Quality Report

Orbit 21459

Creation date: 2024-06-27T18:28:02.001416
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/AS1A05_117T01_9000003166_21459cztM0_level2.evt modeM0/AS1A05_117T01_9000003166_21459cztM0_level2_quad_clean.evt
Size (bytes)945,616,320165,827,520
Size901.8 MB 158.1 MB
Events in quadrant A6,079,6631,058,784
Events in quadrant B6,024,7951,070,677
Events in quadrant C5,916,5551,029,341
Events in quadrant D9,752,502979,936

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265123
B0262753
C0260103
D0377545

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12776500.391359%
B12776900.704446%
C127771110.868749%
D127765934.641515%

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 14621 12778 0 0 0.00% 0.00%
B 14621 12776 2 2 0.01% 0.02%
C 14622 12777 0 0 0.00% 0.00%
D 14621 12776 655 655 4.48% 5.13%

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 11 47 221034 720.58 1521 1490 304.7
A 13 254 18239 54.97 1521 1490 304.7
A 3 137 13245 38.58 1521 1490 304.7
B 0 197 40785 135.19 1515 1475 290.8
B 12 111 36427 120.2 1515 1475 290.8
B 11 111 32070 105.22 1515 1475 290.8
C 14 238 228446 665.35 1459 1469 341.1
C 13 61 10141 25.42 1459 1469 341.1
C 4 175 4927 10.14 1459 1469 341.1
D 12 235 3460952 9748.55 1455 1413 354.9
D 14 35 330606 927.62 1455 1413 354.9
D 1 52 222675 623.49 1455 1413 354.9

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