ASTROSAT CZTI

Data Quality Report

Orbit 35484

Creation date: 2022-04-21T17:35:20.349968
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/AS1T04_095T01_9000005080_35484cztM0_level2.evt modeM0/AS1T04_095T01_9000005080_35484cztM0_level2_quad_clean.evt
Size (bytes)456,517,440100,154,880
Size435.4 MB 95.5 MB
Events in quadrant A2,645,436669,925
Events in quadrant B3,656,334666,350
Events in quadrant C3,652,610664,928
Events in quadrant D3,485,707634,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115332
B0145411
C0144031
D0138591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5676110.193798%
B56762895.091614%
C56761071.885130%
D56761582.783650%

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 7019 5677 3 3 0.04% 0.05%
B 7019 5677 195 195 2.78% 3.43%
C 7019 5677 87 87 1.24% 1.53%
D 7019 5677 111 111 1.58% 1.96%

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 105912 806.94 647 634 130.5
A 15 169 25555 191.01 647 634 130.5
A 13 6 9467 67.7 647 634 130.5
B 5 172 480615 4009.66 628 611 119.7
B 5 236 384767 3209.0 628 611 119.7
B 4 81 169489 1410.7 628 611 119.7
C 0 207 501570 3429.59 626 631 146.1
C 4 254 277429 1895.05 626 631 146.1
C 15 214 228280 1558.56 626 631 146.1
D 7 80 333726 2211.56 625 607 150.6
D 8 195 213955 1416.41 625 607 150.6
D 13 249 108433 715.85 625 607 150.6

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