ASTROSAT CZTI

Data Quality Report

Orbit 04481

Creation date: 2024-06-27T14:42:41.756151
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/AS1G05_253T03_9000000562_04481cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04481cztM0_level2_quad_clean.evt
Size (bytes)968,515,200141,655,680
Size923.6 MB 135.1 MB
Events in quadrant A6,826,003828,271
Events in quadrant B6,942,769831,045
Events in quadrant C6,504,648835,775
Events in quadrant D8,074,223791,682

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02988
B02984
C02982
D02980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030886425
B030862520
C030159469
D034850627

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145621040.714188%
B145131110.764832%
C14526310.213410%
D145172551.756561%

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 16929 14749 24 24 0.14% 0.16%
B 16928 14744 16 16 0.09% 0.11%
C 16929 14746 7 7 0.04% 0.05%
D 16929 14745 147 147 0.87% 1.00%

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 0 118 232197 677.95 1674 1637 340.1
A 15 234 65208 186.93 1674 1637 340.1
A 0 226 38760 109.16 1674 1637 340.1
B 4 48 87863 263.29 1696 1655 327.4
B 14 167 85440 255.89 1696 1655 327.4
B 15 204 69830 208.21 1696 1655 327.4
C 9 54 94468 244.3 1631 1639 380.0
C 9 16 24012 58.88 1631 1639 380.0
C 13 61 13358 30.84 1631 1639 380.0
D 13 235 743038 1908.77 1605 1561 388.5
D 14 34 484345 1242.82 1605 1561 388.5
D 12 79 337974 866.02 1605 1561 388.5

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