ASTROSAT CZTI

Data Quality Report

Orbit 11095

Creation date: 2024-06-27T16:08:13.285503
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/AS1G08_071T02_9000001620_11095cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11095cztM0_level2_quad_clean.evt
Size (bytes)948,960,000141,004,800
Size905.0 MB 134.5 MB
Events in quadrant A5,700,800879,038
Events in quadrant B7,847,085865,188
Events in quadrant C5,273,030885,023
Events in quadrant D9,128,747833,136

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246623
B0309772
C0240322
D0350152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116832101.797484%
B116836845.854661%
C116831361.164085%
D1168311119.509544%

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 12473 11685 4 4 0.03% 0.03%
B 12473 11685 310 310 2.49% 2.65%
C 12473 11685 0 0 0.00% 0.00%
D 12473 11685 856 856 6.86% 7.33%

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 8 15 272810 968.38 1384 1353 280.3
A 14 238 66999 234.18 1384 1353 280.3
A 11 29 27450 93.1 1384 1353 280.3
B 4 239 1078067 4097.65 1368 1334 262.8
B 10 16 995756 3784.41 1368 1334 262.8
B 15 204 153201 577.95 1368 1334 262.8
C 13 61 10011 27.56 1349 1356 314.1
C 12 4 5307 12.58 1349 1356 314.1
C 14 234 4344 9.51 1349 1356 314.1
D 10 253 1489155 4702.53 1299 1261 316.4
D 4 95 1407840 4445.53 1299 1261 316.4
D 1 52 475071 1497.49 1299 1261 316.4

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