ASTROSAT CZTI

Data Quality Report

Orbit 20615

Creation date: 2024-06-27T18:17:26.400825
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/AS1A06_003T04_9000003046_20615cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20615cztM0_level2_quad_clean.evt
Size (bytes)178,041,60023,688,000
Size169.8 MB 22.6 MB
Events in quadrant A1,302,260142,882
Events in quadrant B1,234,884144,161
Events in quadrant C1,229,588136,623
Events in quadrant D1,474,615134,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052111
B049451
C048931
D057251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2183793.618873%
B21841004.578755%
C21841165.311355%
D21841305.952381%

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 3168 2184 0 0 0.00% 0.00%
B 3169 2185 2 2 0.06% 0.09%
C 3169 2185 0 0 0.00% 0.00%
D 3169 2185 49 49 1.55% 2.24%

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 12 16 98647 1540.1 302 295 63.9
A 12 194 20152 310.94 302 295 63.9
A 5 16 13257 202.97 302 295 63.9
B 0 189 13287 215.01 301 293 60.4
B 0 219 12228 197.49 301 293 60.4
B 0 228 9824 157.71 301 293 60.4
C 14 238 44819 639.55 290 291 69.6
C 8 208 39881 568.63 290 291 69.6
C 3 233 6256 85.67 290 291 69.6
D 5 222 161376 2181.77 294 285 73.8
D 1 52 100032 1350.95 294 285 73.8
D 13 153 46098 620.48 294 285 73.8

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