ASTROSAT CZTI

Data Quality Report

Orbit 40564

Creation date: 2024-06-27T22:17:38.674226
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/AS1A12_054T02_9000005550_40564cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40564cztM0_level2_quad_clean.evt
Size (bytes)338,497,92077,598,720
Size322.8 MB 74.0 MB
Events in quadrant A2,738,241589,446
Events in quadrant B2,783,689590,640
Events in quadrant C2,512,325557,865
Events in quadrant D4,101,320258,738

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111293
B0114832
C0106042
D0157502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5027130.258604%
B5027791.571514%
C5027330.656455%
D5027280955.878257%

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 7090 5028 3 3 0.04% 0.06%
B 7090 5028 70 70 0.99% 1.39%
C 7090 5028 28 28 0.39% 0.56%
D 7089 5027 311 311 4.39% 6.19%

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 474129 4161.48 562 551 113.8
A 2 79 70179 611.84 562 551 113.8
A 12 189 7662 62.49 562 551 113.8
B 3 112 185637 1749.02 550 535 105.8
B 4 171 150451 1416.55 550 535 105.8
B 7 202 126256 1187.93 550 535 105.8
C 15 214 221324 1755.09 541 544 125.8
C 14 254 147261 1166.32 541 544 125.8
C 0 10 26825 208.92 541 544 125.8
D 12 227 1296923 13086.44 403 390 99.1
D 12 191 387474 3907.0 403 390 99.1
D 12 0 319717 3223.1 403 390 99.1

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