ASTROSAT CZTI

Data Quality Report

Orbit 20845

Creation date: 2024-06-27T18:20:18.041241
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/AS1C04_001T01_9000003074_20845cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20845cztM0_level2_quad_clean.evt
Size (bytes)484,819,200115,698,240
Size462.4 MB 110.3 MB
Events in quadrant A3,006,304808,423
Events in quadrant B3,553,500786,924
Events in quadrant C2,997,400751,497
Events in quadrant D4,727,463747,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125031
B0142791
C0124101
D0177461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5872881.498638%
B58731622.758386%
C58721422.418256%
D58722894.921662%

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 7042 5872 0 0 0.00% 0.00%
B 7043 5873 38 38 0.54% 0.65%
C 7041 5871 17 17 0.24% 0.29%
D 7041 5871 225 225 3.20% 3.83%

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 2 79 144260 973.96 743 728 147.4
A 8 205 7774 47.81 743 728 147.4
A 0 226 6370 38.28 743 728 147.4
B 7 220 354549 2585.01 725 706 136.9
B 0 189 225442 1641.82 725 706 136.9
B 4 216 22878 161.98 725 706 136.9
C 14 238 111363 694.35 694 698 159.4
C 9 54 105084 654.95 694 698 159.4
C 3 233 65143 404.35 694 698 159.4
D 1 20 1340355 7858.2 716 697 170.5
D 9 1 179845 1050.85 716 697 170.5
D 13 153 167434 978.05 716 697 170.5

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