ASTROSAT CZTI

Data Quality Report

Orbit 32672

Creation date: 2024-06-27T20:40:39.488869
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/AS1A10_057T03_9000004722_32672cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32672cztM0_level2_quad_clean.evt
Size (bytes)672,661,44060,667,200
Size641.5 MB 57.9 MB
Events in quadrant A4,091,584381,730
Events in quadrant B4,026,885395,954
Events in quadrant C3,065,745395,384
Events in quadrant D8,851,868314,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151273
B0153302
C0121032
D0297472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496257111.507457%
B49622935.904877%
C49621643.305119%
D4962270154.433696%

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 7086 4963 482 482 6.80% 9.71%
B 7086 4963 273 273 3.85% 5.50%
C 7086 4963 143 143 2.02% 2.88%
D 7086 4963 2546 2546 35.93% 51.30%

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 15 249 1331830 11322.25 586 575 117.6
A 15 174 375367 3187.58 586 575 117.6
A 12 189 67991 573.37 586 575 117.6
B 0 255 491157 4322.45 604 594 113.5
B 3 26 389252 3424.55 604 594 113.5
B 0 219 328901 2892.78 604 594 113.5
C 0 10 278439 2073.59 582 588 134.0
C 9 236 273039 2033.29 582 588 134.0
C 0 207 62751 463.92 582 588 134.0
D 7 38 4027732 40111.03 418 410 100.4
D 7 80 839795 8360.05 418 410 100.4
D 12 33 667618 6645.21 418 410 100.4

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