ASTROSAT CZTI

Data Quality Report

Orbit 20220330_C07_006T01_9000005040_level2

Creation date: 2022-06-08T16:57:40.687695
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/AS1C07_006T01_9000005040cztM0_level2_bc.evt modeM0/AS1C07_006T01_9000005040cztM0_level2_quad_clean.evt
Size (bytes)270,475,20079,810,560
Size257.9 MB 76.1 MB
Events in quadrant A1,093,549554,060
Events in quadrant B2,338,547523,837
Events in quadrant C1,383,268549,558
Events in quadrant D3,077,770488,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092110
B0151940
C0100100
D0170800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4283100.233481%
B428357913.518562%
C4283962.241420%
D428353812.561289%

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 6408 4284 0 0 0.00% 0.00%
B 6408 4284 39 39 0.61% 0.91%
C 6408 4284 15 15 0.23% 0.35%
D 6408 4283 68 68 1.06% 1.59%

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 10 83 52265 908.93 257 254 57.2
A 9 143 41693 724.18 257 254 57.2
A 13 254 6080 101.81 257 254 57.2
B 5 236 1139598 23023.59 242 237 49.5
B 5 172 186731 3768.57 242 237 49.5
B 5 200 61518 1238.33 242 237 49.5
C 0 10 191363 3314.87 248 247 57.7
C 15 214 166842 2889.56 248 247 57.7
C 1 23 20858 357.49 248 247 57.7
D 8 195 997779 17361.98 238 231 57.5
D 7 80 431665 7508.96 238 231 57.5
D 2 250 412898 7182.33 238 231 57.5

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