ASTROSAT CZTI

Data Quality Report

Orbit 20221028_C07_001T12_9000005372_level2

Creation date: 2023-04-28T17:25:37.670613
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/AS1C07_001T12_9000005372cztM0_level2.fits modeM0/AS1C07_001T12_9000005372cztM0_level2_quad_clean.evt
Size (bytes)654,485,760934,194,240
Size624.2 MB 890.9 MB
Events in quadrant A4,054,4926,733,434
Events in quadrant B3,899,7186,730,916
Events in quadrant C4,032,7006,539,556
Events in quadrant D2,630,4083,105,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015460
B015460
C015460
D015460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01672520
B01644770
C01570340
D04805290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A756185500.727340%
B756187841.036790%
C756182170.286969%
D756183832150.677087%

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 102533 75615 0 0 0.00% 0.00%
B 102533 75608 0 0 0.00% 0.00%
C 102533 75617 0 0 0.00% 0.00%
D 102533 75543 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 0 29 3400 9.0 1061 1000 266.6
A 9 19 3372 8.9 1061 1000 266.6
A 7 110 3284 8.57 1061 1000 266.6
B 2 9 3316 11.6 1033 989 200.6
B 3 80 3164 10.84 1033 989 200.6
B 5 128 2850 9.28 1033 989 200.6
C 1 81 3389 8.75 1068 1008 272.2
C 1 80 3288 8.38 1068 1008 272.2
C 3 203 3232 8.17 1068 1008 272.2
D 6 231 1982 6.32 753 685 205.2
D 4 160 1980 6.31 753 685 205.2
D 3 14 1966 6.24 753 685 205.2

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