ASTROSAT CZTI

Data Quality Report

Orbit 52684

Creation date: 2025-06-24T23:00:01.163128
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/AS1C09_011T07_9000006480_52684cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52684cztM0_level2_quad_clean.evt
Size (bytes)328,504,32030,666,240
Size313.3 MB 29.2 MB
Events in quadrant A1,326,629237,899
Events in quadrant B2,712,755230,167
Events in quadrant C5,433,54791,747
Events in quadrant D2,493,424190,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055940
B098070
C0178280
D090770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2478251.008878%
B247926710.770472%
C2479160464.703509%
D247929511.899960%

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 2478 2478 23 23 0.93% 0.93%
B 2479 2479 186 186 7.50% 7.50%
C 2479 2479 1624 1624 65.51% 65.51%
D 2479 2479 300 300 12.10% 12.10%

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 14 156130 2462.13 241 235 63.3
A 5 241 92222 1452.8 241 235 63.3
A 7 206 26017 407.19 241 235 63.3
B 10 128 830820 16448.94 230 222 50.5
B 12 32 372273 7368.0 230 222 50.5
B 4 171 136526 2699.33 230 222 50.5
C 15 248 2937776 60435.21 169 166 48.6
C 14 96 1261726 25953.97 169 166 48.6
C 12 252 218621 4494.26 169 166 48.6
D 1 7 550784 8408.8 225 215 65.5
D 8 176 493114 7528.01 225 215 65.5
D 12 33 162160 2473.37 225 215 65.5

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