ASTROSAT CZTI

Data Quality Report

Orbit 00815

Creation date: 2024-06-27T14:03:20.256169
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/AS1P01_010T01_9000000112_00815cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00815cztM0_level2_quad_clean.evt
Size (bytes)571,991,04053,968,320
Size545.5 MB 51.5 MB
Events in quadrant A4,192,025344,961
Events in quadrant B4,394,883351,634
Events in quadrant C4,362,500340,583
Events in quadrant D4,122,151331,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150960
B0157270
C0156200
D0149150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A375300.000000%
B375300.000000%
C3754170.452850%
D3754230.612680%

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 3753 3753 29 29 0.77% 0.77%
B 3753 3753 44 44 1.17% 1.17%
C 3754 3754 89 89 2.37% 2.37%
D 3754 3754 70 70 1.86% 1.86%

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 14 79 11493 39.26 1089 1094 264.8
A 11 79 4557 13.08 1089 1094 264.8
A 15 233 3624 9.55 1089 1094 264.8
B 0 220 71277 261.75 1131 1134 268.0
B 15 85 11030 36.93 1131 1134 268.0
B 7 221 10310 34.24 1131 1134 268.0
C 9 160 149733 503.31 1058 1098 295.3
C 3 111 18750 59.77 1058 1098 295.3
C 3 79 15897 50.11 1058 1098 295.3
D 2 216 113945 358.5 1027 1063 314.9
D 1 4 101758 319.8 1027 1063 314.9
D 13 170 14742 43.44 1027 1063 314.9

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