ASTROSAT CZTI

Data Quality Report

Orbit 38595

Creation date: 2024-06-27T21:53:52.993313
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_052T04_9000005388_38595cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38595cztM0_level2_quad_clean.evt
Size (bytes)441,103,68090,918,720
Size420.7 MB 86.7 MB
Events in quadrant A2,955,075647,517
Events in quadrant B5,412,131544,107
Events in quadrant C2,822,307624,561
Events in quadrant D4,716,328556,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119863
B0197692
C0118032
D0177552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5431200.368256%
B5431105919.499171%
C5431310.570797%
D54313726.849567%

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 7342 5432 13 13 0.18% 0.24%
B 7342 5432 883 883 12.03% 16.26%
C 7342 5432 29 29 0.39% 0.53%
D 7342 5432 383 383 5.22% 7.05%

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 453793 3646.02 615 603 124.3
A 13 248 59973 477.65 615 603 124.3
A 15 174 29210 230.15 615 603 124.3
B 5 184 2512296 24432.32 544 532 102.8
B 5 172 278504 2703.87 544 532 102.8
B 0 183 134365 1301.81 544 532 102.8
C 15 214 225240 1647.01 589 592 136.4
C 14 254 124456 908.11 589 592 136.4
C 0 10 94126 685.75 589 592 136.4
D 1 47 1476930 10449.48 581 564 141.3
D 12 235 242594 1713.05 581 564 141.3
D 2 250 165618 1168.23 581 564 141.3

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