ASTROSAT CZTI

Data Quality Report

Orbit 23222

Creation date: 2024-06-27T18:51:30.529954
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/AS1A08_009T01_9000003434_23222cztM0_level2.evt modeM0/AS1A08_009T01_9000003434_23222cztM0_level2_quad_clean.evt
Size (bytes)359,449,92050,526,720
Size342.8 MB 48.2 MB
Events in quadrant A1,730,493334,120
Events in quadrant B1,783,508340,028
Events in quadrant C4,368,297296,123
Events in quadrant D2,760,538306,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07580137
B07695138
C015907383
D010795156

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0762
B0762
C0760
D0762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3564300.841751%
B3564722.020202%
C354790925.627291%
D35653499.789621%

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 3897 3575 0 0 0.00% 0.00%
B 3897 3578 1 1 0.03% 0.03%
C 3897 3563 483 483 12.39% 13.56%
D 3897 3579 227 227 5.82% 6.34%

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 13 254 5324 53.01 448 438 92.2
A 3 137 4148 40.25 448 438 92.2
A 0 226 3770 36.15 448 438 92.2
B 0 190 17598 196.16 449 437 87.5
B 12 111 10701 117.32 449 437 87.5
B 11 111 9522 103.85 449 437 87.5
C 2 16 1702947 17947.81 403 404 94.9
C 3 233 988906 10420.56 403 404 94.9
C 14 238 61679 645.95 403 404 94.9
D 1 239 554676 5312.52 424 411 104.3
D 2 82 238629 2283.27 424 411 104.3
D 2 152 149036 1424.54 424 411 104.3

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