ASTROSAT CZTI

Data Quality Report

Orbit 40269

Creation date: 2024-06-27T22:14:22.713605
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_056T02_9000005538_40269cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40269cztM0_level2_quad_clean.evt
Size (bytes)757,978,560193,665,600
Size722.9 MB 184.7 MB
Events in quadrant A7,012,9611,289,199
Events in quadrant B5,748,2051,334,616
Events in quadrant C5,831,0541,296,104
Events in quadrant D8,569,4021,144,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278274
B0246543
C0244723
D0332443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115642952.551020%
B115641140.985818%
C11564570.492909%
D115646005.188516%

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 16432 11567 215 215 1.31% 1.86%
B 16432 11567 57 57 0.35% 0.49%
C 16432 11567 41 41 0.25% 0.35%
D 16432 11567 515 515 3.13% 4.45%

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 13 248 936231 3591.17 1290 1266 260.4
A 10 83 912443 3499.8 1290 1266 260.4
A 6 10 96801 366.95 1290 1266 260.4
B 0 245 272664 1101.41 1296 1260 246.4
B 5 255 175998 709.12 1296 1260 246.4
B 4 171 119518 479.91 1296 1260 246.4
C 15 214 485343 1639.6 1275 1284 295.2
C 14 254 309379 1043.57 1275 1284 295.2
C 15 208 27159 87.64 1275 1284 295.2
D 12 227 1752382 5789.94 1244 1210 302.5
D 1 47 1200359 3964.78 1244 1210 302.5
D 13 249 295351 972.53 1244 1210 302.5

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