ASTROSAT CZTI

Data Quality Report

Orbit 34050

Creation date: 2024-06-27T20:55:54.265939
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/AS1A06_003T04_9000004866_34050cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34050cztM0_level2_quad_clean.evt
Size (bytes)1,093,893,12071,040,960
Size1.0 GB 67.7 MB
Events in quadrant A11,166,842338,398
Events in quadrant B11,471,404406,138
Events in quadrant C5,028,970504,070
Events in quadrant D5,078,786500,048

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370713
B0379902
C0189532
D0190282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5717356462.340388%
B5717387667.797796%
C57173656.384467%
D57183716.488283%

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 7149 5718 3414 3414 47.75% 59.71%
B 7148 5716 3525 3525 49.31% 61.67%
C 7149 5718 380 380 5.32% 6.65%
D 7150 5719 351 351 4.91% 6.14%

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 15 169 9283651 95501.33 480 470 97.2
A 10 83 16676 166.72 480 470 97.2
A 7 16 8762 85.3 480 470 97.2
B 5 31 5312848 53547.56 519 506 99.2
B 5 15 2503269 25227.45 519 506 99.2
B 5 172 1040174 10479.69 519 506 99.2
C 0 10 1873428 12870.63 629 634 145.5
C 3 233 283360 1943.01 629 634 145.5
C 15 214 263357 1805.54 629 634 145.5
D 8 195 934975 6013.74 637 619 155.4
D 13 249 588475 3783.59 637 619 155.4
D 2 250 304539 1956.1 637 619 155.4

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