ASTROSAT CZTI

Data Quality Report

Orbit 36675

Creation date: 2024-06-27T21:30:07.364215
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/AS1T05_041T01_9000005234_36675cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36675cztM0_level2_quad_clean.evt
Size (bytes)445,072,320103,311,360
Size424.5 MB 98.5 MB
Events in quadrant A2,735,342696,828
Events in quadrant B2,928,376701,113
Events in quadrant C3,165,208688,827
Events in quadrant D4,264,398645,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118903
B0124192
C0128772
D0165972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5675210.370044%
B5675440.775330%
C56751071.885463%
D56753426.026432%

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 7198 5676 8 8 0.11% 0.14%
B 7198 5676 20 20 0.28% 0.35%
C 7198 5676 76 76 1.06% 1.34%
D 7198 5676 273 273 3.79% 4.81%

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 217070 1682.66 638 625 128.6
A 9 143 15923 118.93 638 625 128.6
A 0 8 13635 101.14 638 625 128.6
B 5 255 162723 1333.86 635 616 121.5
B 0 189 115920 948.75 635 616 121.5
B 4 171 27864 224.2 635 616 121.5
C 0 10 296562 2039.68 621 625 145.1
C 15 214 257568 1770.93 621 625 145.1
C 8 111 104940 718.97 621 625 145.1
D 2 249 786650 5281.62 610 594 148.8
D 13 249 179921 1204.92 610 594 148.8
D 12 227 141842 949.07 610 594 148.8

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