ASTROSAT CZTI

Data Quality Report

Orbit 19784

Creation date: 2024-06-27T18:06:58.512920
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/AS1A05_117T01_9000002958_19784cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19784cztM0_level2_quad_clean.evt
Size (bytes)847,281,600144,178,560
Size808.0 MB 137.5 MB
Events in quadrant A6,119,208935,216
Events in quadrant B5,628,178942,696
Events in quadrant C7,372,725877,310
Events in quadrant D5,832,221886,566

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251792
B0235932
C0287082
D0246022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104681961.872373%
B104682882.751242%
C104688187.814291%
D104691881.795778%

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 12708 10468 71 71 0.56% 0.68%
B 12708 10468 98 98 0.77% 0.94%
C 12708 10469 476 476 3.75% 4.55%
D 12709 10470 93 93 0.73% 0.89%

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 23 625597 2370.87 1308 1279 263.3
A 15 192 245491 927.4 1308 1279 263.3
A 6 16 170612 643.05 1308 1279 263.3
B 7 220 228028 934.6 1298 1269 242.6
B 4 216 181042 740.94 1298 1269 242.6
B 0 197 113987 464.57 1298 1269 242.6
C 3 233 2387304 8464.51 1215 1226 281.9
C 14 238 196627 693.18 1215 1226 281.9
C 7 247 42292 145.68 1215 1226 281.9
D 1 52 702115 2280.69 1264 1227 307.3
D 12 218 159796 515.98 1264 1227 307.3
D 7 96 131215 422.98 1264 1227 307.3

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