ASTROSAT CZTI

Data Quality Report

Orbit 11178

Creation date: 2024-06-27T16:06:52.697838
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/AS1G08_027T06_9000001594_11178cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_11178cztM0_level2_quad_clean.evt
Size (bytes)406,569,60067,052,160
Size387.7 MB 63.9 MB
Events in quadrant A3,596,431429,893
Events in quadrant B3,075,731437,831
Events in quadrant C2,154,127438,550
Events in quadrant D3,184,535411,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154291537
B0135531499
C0109141159
D0138491386

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010111
B0997
C010210
D010315

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44264379.873475%
B442050811.493213%
C44423207.203962%
D443744410.006761%

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 4621 4492 35 35 0.76% 0.78%
B 4608 4484 93 93 2.02% 2.07%
C 4637 4514 0 0 0.00% 0.00%
D 4612 4494 132 132 2.86% 2.94%

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 8 15 934937 8021.63 555 540 116.5
A 8 5 285286 2444.49 555 540 116.5
A 14 238 215791 1847.89 555 540 116.5
B 4 239 531996 4838.65 551 536 109.8
B 15 204 125518 1137.89 551 536 109.8
B 11 51 72022 650.84 551 536 109.8
C 13 61 4140 27.28 551 552 131.5
C 14 234 2877 17.67 551 552 131.5
C 12 4 2292 13.23 551 552 131.5
D 1 52 341102 2586.07 535 520 131.7
D 10 199 185684 1405.97 535 520 131.7
D 10 157 136241 1030.54 535 520 131.7

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