ASTROSAT CZTI

Data Quality Report

Orbit 11597

Creation date: 2024-06-27T16:15:42.632147
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/AS1A04_130T04_9000001704_11597cztM0_level2.evt modeM0/AS1A04_130T04_9000001704_11597cztM0_level2_quad_clean.evt
Size (bytes)862,332,48075,680,640
Size822.4 MB 72.2 MB
Events in quadrant A11,839,802364,994
Events in quadrant B5,686,397474,359
Events in quadrant C3,406,163474,775
Events in quadrant D4,680,078457,623

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403543
B0219542
C0152912
D0188662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7452333744.779925%
B74526388.561460%
C7452600.805153%
D74532172.911579%

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 7973 7454 2391 2391 29.99% 32.08%
B 7973 7454 320 320 4.01% 4.29%
C 7973 7454 0 0 0.00% 0.00%
D 7974 7455 119 119 1.49% 1.60%

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 8 5 8682573 60587.25 701 684 143.3
A 1 162 164643 1144.2 701 684 143.3
A 1 178 94987 658.1 701 684 143.3
B 4 239 1499818 8904.76 876 854 168.3
B 3 64 492545 2920.94 876 854 168.3
B 11 51 123582 729.08 876 854 168.3
C 13 61 6385 27.07 873 876 203.5
C 14 67 2808 9.49 873 876 203.5
C 3 202 2009 5.57 873 876 203.5
D 1 52 782193 3696.84 872 846 211.4
D 5 222 204004 961.22 872 846 211.4
D 13 122 135543 637.3 872 846 211.4

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