ASTROSAT CZTI

Data Quality Report

Orbit 31978

Creation date: 2024-06-27T20:35:01.076554
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/AS1C06_010T03_9000004672_31978cztM0_level2.evt modeM0/AS1C06_010T03_9000004672_31978cztM0_level2_quad_clean.evt
Size (bytes)1,046,001,600232,464,960
Size997.5 MB 221.7 MB
Events in quadrant A5,510,4681,636,310
Events in quadrant B9,594,4851,599,562
Events in quadrant C6,438,8481,531,951
Events in quadrant D9,365,9821,484,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233382
B0368162
C0258902
D0354562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114031811.587302%
B114035054.428659%
C114034523.963869%
D114038357.322634%

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 13433 11403 0 0 0.00% 0.00%
B 13433 11403 160 160 1.19% 1.40%
C 13433 11403 167 167 1.24% 1.46%
D 13433 11403 658 658 4.90% 5.77%

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 13 254 21008 70.56 1421 1396 278.0
A 14 238 15821 51.89 1421 1396 278.0
A 3 137 13060 41.96 1421 1396 278.0
B 6 159 3043685 11923.73 1382 1350 255.1
B 10 245 428026 1672.26 1382 1350 255.1
B 5 172 292537 1141.24 1382 1350 255.1
C 0 10 793474 2561.43 1342 1347 309.3
C 14 238 238511 766.9 1342 1347 309.3
C 3 233 92278 294.04 1342 1347 309.3
D 12 218 881269 2796.78 1345 1316 314.6
D 13 249 864519 2743.54 1345 1316 314.6
D 11 164 660884 2096.32 1345 1316 314.6

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