ASTROSAT CZTI

Data Quality Report

Orbit 07170

Creation date: 2024-06-27T15:16:28.350568
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/AS1G06_102T01_9000000978_07170cztM0_level2.evt modeM0/AS1G06_102T01_9000000978_07170cztM0_level2_quad_clean.evt
Size (bytes)170,029,44016,274,880
Size162.2 MB 15.5 MB
Events in quadrant A1,085,83881,274
Events in quadrant B1,457,22082,389
Events in quadrant C1,236,01281,731
Events in quadrant D1,208,62277,519

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05239368
B06175337
C05607346
D05411330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0491
B0504
C0504
D0502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2346200.852515%
B2343241.024328%
C2347271.150405%
D2346311.321398%

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 2412 2367 18 18 0.75% 0.76%
B 2408 2365 12 12 0.50% 0.51%
C 2405 2366 27 27 1.12% 1.14%
D 2414 2368 29 29 1.20% 1.22%

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 14 238 62357 1115.92 261 256 55.6
A 8 15 16404 290.17 261 256 55.6
A 0 226 2557 41.35 261 256 55.6
B 10 252 92254 1790.46 262 256 51.4
B 0 219 86380 1676.14 262 256 51.4
B 0 228 71402 1384.64 262 256 51.4
C 4 254 233967 3867.55 252 253 60.4
C 9 68 17115 279.04 252 253 60.4
C 13 61 1974 28.48 252 253 60.4
D 8 195 107907 1689.21 254 246 63.7
D 14 34 76143 1190.83 254 246 63.7
D 7 55 24578 381.77 254 246 63.7

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