ASTROSAT CZTI

Data Quality Report

Orbit 36259

Creation date: 2022-06-14T11:02:45.441854
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/AS1A10_071T36_9000005182_36259cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36259cztM0_level2_quad_clean.evt
Size (bytes)228,346,56024,295,680
Size217.8 MB 23.2 MB
Events in quadrant A1,386,417140,446
Events in quadrant B2,273,930134,982
Events in quadrant C1,531,248136,395
Events in quadrant D1,540,017131,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057102
B085221
C060591
D062531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268550.186220%
B268527810.353818%
C2685381.415270%
D2685240.893855%

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 4598 2686 0 0 0.00% 0.00%
B 4598 2686 156 156 3.39% 5.81%
C 4598 2686 33 33 0.72% 1.23%
D 4598 2686 20 20 0.43% 0.74%

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 92275 1338.1 334 327 68.7
A 13 254 4883 66.3 334 327 68.7
A 3 137 3430 45.16 334 327 68.7
B 5 236 559799 9044.09 323 314 61.9
B 5 172 309082 4991.24 323 314 61.9
B 15 32 50539 811.89 323 314 61.9
C 0 10 123876 1608.49 325 326 76.8
C 15 214 112459 1459.86 325 326 76.8
C 0 207 29747 383.03 325 326 76.8
D 13 171 76849 964.94 322 314 79.3
D 12 6 74514 935.5 322 314 79.3
D 13 249 40692 509.08 322 314 79.3

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