ASTROSAT CZTI

Data Quality Report

Orbit 23033

Creation date: 2024-06-27T18:49:02.859320
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/AS1C05_004T01_9000003404_23033cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23033cztM0_level2_quad_clean.evt
Size (bytes)882,440,640186,635,520
Size841.6 MB 178.0 MB
Events in quadrant A5,385,2351,239,122
Events in quadrant B5,871,5351,255,508
Events in quadrant C5,465,5911,205,495
Events in quadrant D9,211,4051,144,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239122
B0252212
C0241152
D0356632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116942001.710279%
B116952992.556648%
C116952191.872595%
D116957276.216332%

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 12599 11698 0 0 0.00% 0.00%
B 12600 11699 56 56 0.44% 0.48%
C 12600 11699 4 4 0.03% 0.03%
D 12600 11698 484 484 3.84% 4.14%

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 6 16 45731 159.29 1383 1351 278.6
A 13 254 15844 52.02 1383 1351 278.6
A 3 137 12586 40.32 1383 1351 278.6
B 3 64 218271 839.13 1370 1334 258.5
B 4 216 168029 644.79 1370 1334 258.5
B 0 189 76370 290.25 1370 1334 258.5
C 14 238 210418 683.37 1324 1333 306.0
C 0 207 38467 121.37 1324 1333 306.0
C 7 247 31839 99.7 1324 1333 306.0
D 1 52 2150287 6694.93 1321 1279 321.0
D 5 222 785645 2443.58 1321 1279 321.0
D 9 85 548401 1704.48 1321 1279 321.0

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