ASTROSAT CZTI

Data Quality Report

Orbit 35611

Creation date: 2022-04-30T14:19:22.658239
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/AS1A10_065T04_9000005098_35611cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35611cztM0_level2_quad_clean.evt
Size (bytes)441,227,52056,036,160
Size420.8 MB 53.4 MB
Events in quadrant A2,407,929356,918
Events in quadrant B2,817,974359,980
Events in quadrant C2,959,509341,363
Events in quadrant D4,846,482296,358

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101183
B0114432
C0115892
D0176862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487290.184729%
B48721232.524631%
C48721643.366174%
D487282416.912972%

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 6966 4873 0 0 0.00% 0.00%
B 6966 4873 82 82 1.18% 1.68%
C 6966 4873 138 138 1.98% 2.83%
D 6966 4873 710 710 10.19% 14.57%

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 132071 1122.84 578 568 117.1
A 8 6 17570 145.17 578 568 117.1
A 13 6 8007 63.52 578 568 117.1
B 5 172 453901 4107.74 573 558 110.4
B 3 112 83460 751.17 573 558 110.4
B 12 111 13439 116.71 573 558 110.4
C 0 10 495398 3858.92 552 555 128.2
C 15 214 199783 1553.63 552 555 128.2
C 12 249 92446 716.59 552 555 128.2
D 7 80 2523218 19690.99 511 497 128.1
D 12 233 172039 1338.96 511 497 128.1
D 8 195 51674 399.46 511 497 128.1

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