ASTROSAT CZTI

Data Quality Report

Orbit 15524

Creation date: 2024-06-27T17:09:49.825893
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/AS1T02_079T01_9000002298_15524cztM0_level2.evt modeM0/AS1T02_079T01_9000002298_15524cztM0_level2_quad_clean.evt
Size (bytes)759,461,760152,173,440
Size724.3 MB 145.1 MB
Events in quadrant A5,376,780968,727
Events in quadrant B5,549,615978,782
Events in quadrant C5,781,455942,585
Events in quadrant D5,518,865928,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235932
B0239182
C0244502
D0245252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11424990.866597%
B11424850.744048%
C114241721.505602%
D114241000.875350%

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 12350 11427 17 17 0.14% 0.15%
B 12350 11428 15 15 0.12% 0.13%
C 12350 11428 32 32 0.26% 0.28%
D 12350 11427 54 54 0.44% 0.47%

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 9 143 89536 328.78 1334 1307 268.3
A 0 253 80787 296.18 1334 1307 268.3
A 14 238 58500 213.13 1334 1307 268.3
B 4 142 44412 168.61 1338 1305 255.7
B 0 189 42840 162.46 1338 1305 255.7
B 4 190 41454 157.04 1338 1305 255.7
C 3 233 449117 1514.26 1270 1276 295.7
C 14 238 195873 657.98 1270 1276 295.7
C 9 54 129952 435.09 1270 1276 295.7
D 7 38 172805 549.49 1292 1252 312.2
D 12 221 164609 523.24 1292 1252 312.2
D 5 222 116279 368.43 1292 1252 312.2

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