ASTROSAT CZTI

Data Quality Report

Orbit 39875

Creation date: 2024-06-27T22:09:43.868285
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/AS1A12_032T02_9000005500_39875cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39875cztM0_level2_quad_clean.evt
Size (bytes)272,067,84070,326,720
Size259.5 MB 67.1 MB
Events in quadrant A2,265,579474,356
Events in quadrant B2,335,737477,345
Events in quadrant C2,070,606463,490
Events in quadrant D3,061,096409,553

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093801
B0100301
C089051
D0121921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4330200.461894%
B4330611.408776%
C433050.115473%
D43302545.866051%

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 5643 4331 15 15 0.27% 0.35%
B 5643 4331 27 27 0.48% 0.62%
C 5643 4331 5 5 0.09% 0.12%
D 5643 4331 226 226 4.00% 5.22%

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 361155 3781.27 461 451 95.4
A 13 248 56098 583.35 461 451 95.4
A 15 223 28604 295.13 461 451 95.4
B 0 183 146428 1619.16 461 448 90.2
B 0 245 122600 1354.86 461 448 90.2
B 5 207 62711 690.6 461 448 90.2
C 15 214 178282 1663.31 454 457 106.9
C 1 16 32527 299.97 454 457 106.9
C 15 208 26369 242.37 454 457 106.9
D 12 227 336604 3093.7 440 427 108.7
D 1 47 208202 1912.07 440 427 108.7
D 2 250 196042 1800.17 440 427 108.7

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