ASTROSAT CZTI

Data Quality Report

Orbit 18181

Creation date: 2024-06-27T17:46:23.068406
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/AS1A05_160T02_9000002710_18181cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18181cztM0_level2_quad_clean.evt
Size (bytes)205,611,84027,207,360
Size196.1 MB 25.9 MB
Events in quadrant A1,456,586159,627
Events in quadrant B1,452,356162,322
Events in quadrant C1,490,893157,973
Events in quadrant D1,648,316156,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058562
B058381
C059311
D064851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26031184.533231%
B26031054.033807%
C26031315.032655%
D26031375.263158%

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 3848 2604 1 1 0.03% 0.04%
B 3848 2604 0 0 0.00% 0.00%
C 3848 2604 2 2 0.05% 0.08%
D 3848 2604 31 31 0.81% 1.19%

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 15 174 32587 424.45 369 361 75.9
A 4 2 4117 49.47 369 361 75.9
A 0 226 3301 38.72 369 361 75.9
B 7 220 9645 130.37 363 354 71.3
B 12 111 8209 110.22 363 354 71.3
B 0 189 7042 93.84 363 354 71.3
C 4 254 59665 706.86 352 353 83.9
C 14 238 54190 641.61 352 353 83.9
C 1 16 4321 47.29 352 353 83.9
D 7 238 227366 2527.81 359 348 89.8
D 10 70 19045 208.19 359 348 89.8
D 9 64 12423 134.45 359 348 89.8

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