ASTROSAT CZTI

Data Quality Report

Orbit 41542

Creation date: 2024-06-27T22:30:14.413823
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_035T02_9000005676_41542cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41542cztM0_level2_quad_clean.evt
Size (bytes)341,622,72091,506,240
Size325.8 MB 87.3 MB
Events in quadrant A3,026,823616,194
Events in quadrant B3,124,326622,946
Events in quadrant C3,042,949583,791
Events in quadrant D3,013,544554,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123693
B0130102
C0126312
D0130022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5625160.284444%
B5625621.102222%
C56251873.324444%
D56251142.026667%

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 7267 5626 2 2 0.03% 0.04%
B 7267 5626 29 29 0.40% 0.52%
C 7267 5626 186 186 2.56% 3.31%
D 7267 5626 109 109 1.50% 1.94%

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 545811 4252.12 623 609 128.2
A 14 235 44979 346.05 623 609 128.2
A 2 79 13896 103.63 623 609 128.2
B 0 186 466322 3927.81 613 596 118.6
B 0 189 99225 831.81 613 596 118.6
B 0 245 95257 798.35 613 596 118.6
C 0 10 488540 3517.7 592 594 138.7
C 15 214 244811 1760.61 592 594 138.7
C 13 61 3989 24.48 592 594 138.7
D 2 249 300059 2009.86 606 589 149.0
D 13 249 111556 744.74 606 589 149.0
D 5 222 97004 647.08 606 589 149.0

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