ASTROSAT CZTI

Data Quality Report

Orbit 12271

Creation date: 2024-06-27T16:24:45.703875
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/AS1G08_064T01_9000001814_12271cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12271cztM0_level2_quad_clean.evt
Size (bytes)2,378,416,320363,922,560
Size2.2 GB 347.1 MB
Events in quadrant A19,145,3092,287,915
Events in quadrant B20,240,3292,262,228
Events in quadrant C13,877,0842,318,810
Events in quadrant D16,858,3092,204,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0759626
B0797225
C0612625
D0703425

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283427122.512173%
B2834226869.477101%
C283422250.793875%
D283428733.080234%

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 32473 28348 226 226 0.70% 0.80%
B 32473 28348 1534 1534 4.72% 5.41%
C 32473 28348 115 115 0.35% 0.41%
D 32473 28346 594 594 1.83% 2.10%

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 13 251 4336487 6613.8 3246 3182 655.2
A 1 162 471439 714.69 3246 3182 655.2
A 5 16 388487 588.08 3246 3182 655.2
B 4 239 6318607 10816.88 3117 3044 583.9
B 0 85 761924 1299.76 3117 3044 583.9
B 11 51 352582 598.67 3117 3044 583.9
C 15 208 917377 1254.43 3164 3179 728.8
C 3 233 484282 660.15 3164 3179 728.8
C 4 175 97901 129.97 3164 3179 728.8
D 1 52 3094840 4196.01 3114 3030 736.8
D 13 249 314060 422.11 3114 3030 736.8
D 2 33 295263 396.6 3114 3030 736.8

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