ASTROSAT CZTI

Data Quality Report

Orbit 34758

Creation date: 2022-03-03T15:34:03.769603
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_004T01_9000004990_34758cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34758cztM0_level2_quad_clean.evt
Size (bytes)484,868,16073,146,240
Size462.4 MB 69.8 MB
Events in quadrant A2,603,523458,591
Events in quadrant B2,912,974470,983
Events in quadrant C2,965,428472,315
Events in quadrant D5,832,355431,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110913
B0118112
C0118212
D0211422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544860.110132%
B5448240.440529%
C5448500.917768%
D544886515.877386%

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 9425 5450 0 0 0.00% 0.00%
B 9425 5450 14 14 0.15% 0.26%
C 9425 5450 28 28 0.30% 0.51%
D 9425 5450 687 687 7.29% 12.61%

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 49413 372.67 656 645 130.9
A 13 6 11382 82.05 656 645 130.9
A 13 254 9180 65.22 656 645 130.9
B 4 232 121426 971.68 655 639 124.3
B 0 190 87014 694.85 655 639 124.3
B 5 255 57536 457.71 655 639 124.3
C 15 214 233432 1569.85 641 645 148.3
C 0 10 139424 935.89 641 645 148.3
C 14 67 62628 418.0 641 645 148.3
D 2 250 2212654 15019.83 599 582 147.3
D 8 195 894455 6069.34 599 582 147.3
D 2 249 174260 1179.26 599 582 147.3

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