ASTROSAT CZTI

Data Quality Report

Orbit 41701

Creation date: 2024-06-27T22:31:47.381476
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_077T12_9000005692_41701cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41701cztM0_level2_quad_clean.evt
Size (bytes)361,670,400100,226,880
Size344.9 MB 95.6 MB
Events in quadrant A3,444,363671,426
Events in quadrant B2,824,417696,791
Events in quadrant C3,097,936650,354
Events in quadrant D3,543,010587,084

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138573
B0124742
C0129662
D0149062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6141160.260544%
B614190.146556%
C6141741.205015%
D61412624.266406%

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 9187 6143 7 7 0.08% 0.11%
B 9187 6143 1 1 0.01% 0.02%
C 9187 6143 70 70 0.76% 1.14%
D 9187 6143 251 251 2.73% 4.09%

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 10 83 571492 3979.42 693 680 143.4
A 9 240 123569 856.72 693 680 143.4
A 6 10 43792 300.56 693 680 143.4
B 0 245 107868 791.08 688 670 135.5
B 12 111 17351 123.1 688 670 135.5
B 11 111 16280 115.2 688 670 135.5
C 15 214 253875 1598.34 672 675 158.4
C 0 10 222309 1399.08 672 675 158.4
C 13 61 4416 23.62 672 675 158.4
D 2 249 705860 4406.24 659 640 160.1
D 13 249 251063 1564.65 659 640 160.1
D 2 120 26008 158.5 659 640 160.1

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