ASTROSAT CZTI

Data Quality Report

Orbit 08439

Creation date: 2024-06-27T15:30:23.341838
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/AS1G06_136T01_9000001148_08439cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08439cztM0_level2_quad_clean.evt
Size (bytes)40,838,40012,363,840
Size38.9 MB 11.8 MB
Events in quadrant A293,46379,187
Events in quadrant B296,87281,632
Events in quadrant C304,37582,432
Events in quadrant D295,81678,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012671
B012680
C013290
D013060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63100.000000%
B63100.000000%
C63110.158479%
D63120.316957%

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 632 632 0 0 0.00% 0.00%
B 632 632 0 0 0.00% 0.00%
C 632 632 1 1 0.16% 0.16%
D 632 632 2 2 0.32% 0.32%

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 13 248 1514 81.72 75 74 17.6
A 0 128 1341 71.9 75 74 17.6
A 0 226 778 39.95 75 74 17.6
B 0 214 4327 255.52 74 73 16.6
B 15 204 2274 132.2 74 73 16.6
B 12 111 1564 89.56 74 73 16.6
C 13 255 22315 1223.81 71 71 18.2
C 13 61 4003 216.33 71 71 18.2
C 3 202 174 5.67 71 71 18.2
D 13 174 6882 344.76 72 69 19.8
D 1 52 5018 250.44 72 69 19.8
D 12 233 3755 186.52 72 69 19.8

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