ASTROSAT CZTI

Data Quality Report

Orbit 43535

Creation date: 2024-06-27T22:52:53.681446
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/AS1A12_102T01_9000005876_43535cztM0_level2.fits modeM0/AS1A12_102T01_9000005876_43535cztM0_level2_quad_clean.evt
Size (bytes)2,304,420,480135,138,240
Size2.1 GB 128.9 MB
Events in quadrant A16,083,2521,223,994
Events in quadrant B13,774,0431,312,378
Events in quadrant C29,826,524638,691
Events in quadrant D24,696,73773,104

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0563122
B0494022
C0967432
D0816502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12008258521.527315%
B12008225818.804131%
C120071078789.839260%
D1200812008100.000000%

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 13628 12010 1535 1535 11.26% 12.78%
B 13628 12010 1432 1432 10.51% 11.92%
C 13626 12006 10199 10199 74.85% 84.95%
D 13627 12007 7373 7373 54.11% 61.41%

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 0 228 6257633 25507.16 1218 1192 245.3
A 10 83 1257922 5123.62 1218 1192 245.3
A 15 223 1183244 4819.16 1218 1192 245.3
B 3 25 3435937 14377.83 1262 1228 238.9
B 3 42 3260250 13642.4 1262 1228 238.9
B 5 235 551610 2303.92 1262 1228 238.9
C 15 142 10855724 71333.81 653 657 152.2
C 15 126 6696618 44002.34 653 657 152.2
C 15 190 3110896 20438.86 653 657 152.2
D 4 216 14742182 140411.25 116 104 105.0
D 8 160 1453464 13842.56 116 104 105.0
D 4 212 1146489 10918.77 116 104 105.0

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