ASTROSAT CZTI

Data Quality Report

Orbit 55109

Creation date: 2025-12-05T12:43:04.312164
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/AS1A14_025T01_9000006530_55109cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55109cztM0_level2_quad_clean.evt
Size (bytes)12,957,1204,711,680
Size12.4 MB 4.5 MB
Events in quadrant A146,36834,391
Events in quadrant B140,34133,025
Events in quadrant C123,25434,128
Events in quadrant D46,2839,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06410
B05770
C05380
D01950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0580
C0570
D0570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B0100
C030
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32320.619195%
B28910.346021%
C27331.098901%
D10210.980392%

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 7644 643 0 0 0.00% 0.00%
B 7561 576 0 0 0.00% 0.00%
C 7644 543 0 0 0.00% 0.00%
D 7432 202 0 0 0.00% 0.00%

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 0 8 2246 206.82 36 35 10.7
A 5 241 1857 170.43 36 35 10.7
A 13 254 614 54.16 36 35 10.7
B 0 63 9761 1113.2 31 30 8.7
B 4 156 1557 174.69 31 30 8.7
B 4 21 936 103.64 31 30 8.7
C 7 2 2034 206.3 29 29 9.7
C 1 16 1215 122.03 29 29 9.7
C 12 250 1028 102.79 29 29 9.7
D 6 239 2540 585.72 10 9 4.3
D 2 31 827 189.3 10 9 4.3
D 5 173 778 177.96 10 9 4.3

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