ASTROSAT CZTI

Data Quality Report

Orbit 29671

Creation date: 2024-06-27T20:06:39.089359
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/AS1A10_097T02_9000004272_29671cztM0_level2.evt modeM0/AS1A10_097T02_9000004272_29671cztM0_level2_quad_clean.evt
Size (bytes)655,416,000103,818,240
Size625.1 MB 99.0 MB
Events in quadrant A3,220,662708,448
Events in quadrant B3,328,755716,587
Events in quadrant C3,304,480670,468
Events in quadrant D9,560,669600,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137431
B0139451
C0139441
D0329471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427520.809087%
B6426490.762527%
C6426981.525054%
D6427209832.643535%

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 7572 6427 0 0 0.00% 0.00%
B 7571 6426 3 3 0.04% 0.05%
C 7571 6426 8 8 0.11% 0.12%
D 7572 6427 1970 1970 26.02% 30.65%

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 13 254 11424 63.88 833 818 166.0
A 3 137 7943 42.92 833 818 166.0
A 0 226 7118 37.95 833 818 166.0
B 0 189 61683 385.25 819 800 158.0
B 0 229 43329 269.11 819 800 158.0
B 12 111 18934 114.75 819 800 158.0
C 14 238 129337 705.0 782 787 182.3
C 10 22 93758 509.88 782 787 182.3
C 2 114 15132 78.67 782 787 182.3
D 7 80 6352267 42264.26 636 620 150.3
D 8 195 443125 2944.46 636 620 150.3
D 7 238 162036 1074.07 636 620 150.3

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