ASTROSAT CZTI

Data Quality Report

Orbit 22870

Creation date: 2024-06-27T18:45:16.816763
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/AS1A08_007T01_9000003362_22870cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22870cztM0_level2_quad_clean.evt
Size (bytes)180,046,08042,776,640
Size171.7 MB 40.8 MB
Events in quadrant A1,248,551295,256
Events in quadrant B1,246,465291,202
Events in quadrant C1,221,370272,472
Events in quadrant D1,573,202265,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05711
B0588
C05812
D05814

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06032959
B061421074
C060271002
D077321608

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2403220.915522%
B2378291.219512%
C2383321.342845%
D2345562.388060%

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 4173 2508 0 0 0.00% 0.00%
B 4183 2492 0 0 0.00% 0.00%
C 4157 2472 0 0 0.00% 0.00%
D 4115 2426 33 33 0.80% 1.36%

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 6815 98.86 321 315 65.8
A 13 254 4040 56.65 321 315 65.8
A 0 226 2821 38.11 321 315 65.8
B 12 111 6960 110.72 315 308 60.1
B 11 111 5833 91.96 315 308 60.1
B 0 189 5625 88.5 315 308 60.1
C 14 238 48440 695.6 297 298 69.2
C 9 54 5233 71.31 297 298 69.2
C 0 10 4683 63.36 297 298 69.2
D 7 238 171603 2342.64 299 291 73.1
D 9 1 110405 1505.78 299 291 73.1
D 1 239 63033 857.98 299 291 73.1

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