ASTROSAT CZTI

Data Quality Report

Orbit 01220

Creation date: 2024-06-27T14:09:19.731434
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/AS1G04_007T02_9000000220_01220cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01220cztM0_level2_quad_clean.evt
Size (bytes)1,425,965,760106,752,960
Size1.3 GB 101.8 MB
Events in quadrant A9,306,812717,129
Events in quadrant B11,682,031678,559
Events in quadrant C8,980,288687,295
Events in quadrant D12,733,590638,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328241
B0400080
C0318420
D0431290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7334751.022634%
B73347299.940005%
C733440.054540%
D733496013.089719%

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 7334 7334 445 445 6.07% 6.07%
B 7334 7334 1552 1552 21.16% 21.16%
C 7334 7334 221 221 3.01% 3.01%
D 7334 7334 2408 2408 32.83% 32.83%

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 15 127 453594 811.96 2297 2306 555.8
A 0 51 17886 28.03 2297 2306 555.8
A 0 5 11257 16.1 2297 2306 555.8
B 2 32 2519353 4680.27 2275 2283 537.8
B 6 53 191623 352.06 2275 2283 537.8
B 15 22 115520 210.55 2275 2283 537.8
C 15 241 387491 643.09 2148 2221 599.1
C 8 208 91970 149.81 2148 2221 599.1
C 3 79 64138 103.35 2148 2221 599.1
D 1 239 4010066 6307.33 2036 2110 635.4
D 13 70 515135 807.35 2036 2110 635.4
D 1 83 272497 425.51 2036 2110 635.4

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