ASTROSAT CZTI

Data Quality Report

Orbit 26288

Creation date: 2024-06-27T19:27:02.560345
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/AS1A09_044T01_9000003792_26288cztM0_level2.evt modeM0/AS1A09_044T01_9000003792_26288cztM0_level2_quad_clean.evt
Size (bytes)914,042,880128,658,240
Size871.7 MB 122.7 MB
Events in quadrant A5,817,701782,336
Events in quadrant B5,666,433813,676
Events in quadrant C5,820,269785,558
Events in quadrant D9,626,527745,249

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237660
B0230920
C0234660
D0361190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11114930.836782%
B111141000.899766%
C111151641.475484%
D111158377.530364%

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 13595 11117 19 19 0.14% 0.17%
B 13596 11118 0 0 0.00% 0.00%
C 13596 11118 3 3 0.02% 0.03%
D 13596 11118 727 727 5.35% 6.54%

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 13 278987 972.76 1433 1409 285.4
A 13 254 18772 60.85 1433 1409 285.4
A 8 192 14134 44.59 1433 1409 285.4
B 12 111 32007 114.35 1443 1408 267.6
B 11 111 28439 101.01 1443 1408 267.6
B 14 111 25608 90.43 1443 1408 267.6
C 14 238 226001 697.26 1401 1414 322.1
C 4 254 84633 258.36 1401 1414 322.1
C 2 16 23778 69.43 1401 1414 322.1
D 1 52 4301300 13283.72 1365 1333 323.7
D 11 176 53426 160.93 1365 1333 323.7
D 2 234 42623 127.55 1365 1333 323.7

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