ASTROSAT CZTI

Data Quality Report

Orbit 08204

Creation date: 2024-06-27T15:29:26.486665
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/AS1A03_103T01_9000001132_08204cztM0_level2.evt modeM0/AS1A03_103T01_9000001132_08204cztM0_level2_quad_clean.evt
Size (bytes)451,797,120112,769,280
Size430.9 MB 107.5 MB
Events in quadrant A2,792,351775,220
Events in quadrant B2,969,757785,507
Events in quadrant C2,713,240772,734
Events in quadrant D4,799,661663,038

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123892
B0126601
C0123151
D0186191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5994651.084418%
B5994651.084418%
C5994470.784117%
D599481013.513514%

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 7109 5994 2 2 0.03% 0.03%
B 7109 5994 8 8 0.11% 0.13%
C 7109 5994 0 0 0.00% 0.00%
D 7109 5994 714 714 10.04% 11.91%

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 5 16 21536 143.41 719 705 145.3
A 0 226 6680 41.14 719 705 145.3
A 12 194 6583 40.47 719 705 145.3
B 0 214 102612 758.38 717 700 134.4
B 10 16 46138 338.13 717 700 134.4
B 4 81 20534 147.59 717 700 134.4
C 13 61 5333 29.18 695 698 158.8
C 3 202 1797 6.92 695 698 158.8
C 12 4 1672 6.13 695 698 158.8
D 1 52 2296861 14809.73 632 611 155.1
D 13 122 48721 310.28 632 611 155.1
D 13 137 24459 153.81 632 611 155.1

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