ASTROSAT CZTI

Data Quality Report

Orbit 45308

Creation date: 2024-06-27T23:12:11.964882
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/AS1A13_073T04_9000006066_45308cztM0_level2.fits modeM0/AS1A13_073T04_9000006066_45308cztM0_level2_quad_clean.evt
Size (bytes)750,450,240185,604,480
Size715.7 MB 177.0 MB
Events in quadrant A9,363,8271,213,443
Events in quadrant B5,366,7141,259,889
Events in quadrant C5,422,6521,224,848
Events in quadrant D6,721,9591,114,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360982
B0242262
C0248592
D0282172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116672141.834233%
B116681381.182722%
C116681160.994172%
D116683723.188207%

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 12547 11667 20 20 0.16% 0.17%
B 12548 11669 16 16 0.13% 0.14%
C 12548 11670 70 70 0.56% 0.60%
D 12548 11669 315 315 2.51% 2.70%

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 10 83 4277763 16079.21 1278 1250 266.0
A 10 248 94734 351.49 1278 1250 266.0
A 7 16 28203 101.34 1278 1250 266.0
B 0 183 112647 444.81 1279 1240 250.5
B 5 172 72835 285.85 1279 1240 250.5
B 5 255 40897 158.34 1279 1240 250.5
C 14 254 359290 1203.91 1265 1275 297.4
C 3 233 80994 268.07 1265 1275 297.4
C 12 250 25796 82.46 1265 1275 297.4
D 13 249 523429 1660.08 1260 1224 314.6
D 5 222 404351 1281.53 1260 1224 314.6
D 13 171 262678 831.16 1260 1224 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