ASTROSAT CZTI

Data Quality Report

Orbit 37009

Creation date: 2024-06-27T21:34:12.740899
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/AS1C07_015T02_9000005258_37009cztM0_level2.evt modeM0/AS1C07_015T02_9000005258_37009cztM0_level2_quad_clean.evt
Size (bytes)318,801,60066,444,480
Size304.0 MB 63.4 MB
Events in quadrant A2,013,138436,408
Events in quadrant B2,106,053435,986
Events in quadrant C2,365,563434,123
Events in quadrant D2,886,575412,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0868167
B0902070
C0963586
D01144494

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0842
C0833
D0842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A417170.167825%
B4168350.839731%
C4159591.418610%
D4168831.991363%

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 4213 4203 0 0 0.00% 0.00%
B 4213 4193 28 28 0.66% 0.67%
C 4213 4187 50 50 1.19% 1.19%
D 4213 4196 82 82 1.95% 1.95%

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 151727 1561.76 472 464 96.9
A 12 189 21054 212.59 472 464 96.9
A 13 6 11406 112.97 472 464 96.9
B 5 172 128153 1427.15 464 453 89.5
B 0 213 45756 506.3 464 453 89.5
B 5 255 31086 342.35 464 453 89.5
C 1 23 176084 1658.62 452 456 105.9
C 15 214 173503 1634.25 452 456 105.9
C 10 20 143645 1352.27 452 456 105.9
D 2 153 319965 2863.79 454 442 111.6
D 1 52 298844 2674.49 454 442 111.6
D 12 235 218889 1957.88 454 442 111.6

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