ASTROSAT CZTI

Data Quality Report

Orbit 51710

Creation date: 2025-04-22T12:01:19.660396
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/AS1A13_031T01_9000006462_51710cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51710cztM0_level2_quad_clean.evt
Size (bytes)553,970,880113,088,960
Size528.3 MB 107.9 MB
Events in quadrant A5,931,412723,707
Events in quadrant B4,258,006788,909
Events in quadrant C5,519,458698,008
Events in quadrant D4,196,808675,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228362
B0180442
C0219292
D0178332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77373734.820990%
B77382022.610494%
C77384706.073921%
D77381461.886792%

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 9557 7739 233 233 2.44% 3.01%
B 9558 7739 88 88 0.92% 1.14%
C 9558 7740 383 383 4.01% 4.95%
D 9558 7739 127 127 1.33% 1.64%

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 3 78 1105937 5483.37 819 801 201.5
A 3 14 447281 2215.31 819 801 201.5
A 12 3 375942 1861.34 819 801 201.5
B 8 128 293872 1674.02 819 792 175.1
B 1 223 261660 1490.03 819 792 175.1
B 0 213 84257 476.74 819 792 175.1
C 0 192 1003358 4577.29 802 796 219.0
C 12 254 530046 2416.34 802 796 219.0
C 13 3 436941 1991.26 802 796 219.0
D 8 176 241482 1067.11 800 770 225.6
D 5 157 184950 816.49 800 770 225.6
D 2 120 166034 732.64 800 770 225.6

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