ASTROSAT CZTI

Data Quality Report

Orbit 53513

Creation date: 2025-08-20T09:58:50.481506
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_002T07_9000006498_53513cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53513cztM0_level2_quad_clean.evt
Size (bytes)326,750,40038,427,840
Size311.6 MB 36.6 MB
Events in quadrant A4,613,335207,215
Events in quadrant B1,470,742313,325
Events in quadrant C4,091,637194,930
Events in quadrant D1,701,740249,270

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156850
B061870
C0140970
D069130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278699035.534817%
B2787180.645856%
C278790132.328669%
D2787461.650520%

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 2786 2786 850 850 30.51% 30.51%
B 2787 2787 10 10 0.36% 0.36%
C 2787 2787 764 764 27.41% 27.41%
D 2787 2787 42 42 1.51% 1.51%

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 62 2522002 36198.2 276 271 69.7
A 3 63 700015 10044.48 276 271 69.7
A 15 174 247112 3543.28 276 271 69.7
B 5 185 139982 2097.94 306 296 66.6
B 4 171 43177 644.03 306 296 66.6
B 10 28 25479 378.22 306 296 66.6
C 7 64 1285292 18192.92 255 253 70.6
C 12 254 1003253 14199.96 255 253 70.6
C 1 241 679897 9622.05 255 253 70.6
D 2 153 201935 2373.71 295 281 85.0
D 3 12 130804 1536.42 295 281 85.0
D 2 16 36605 427.58 295 281 85.0

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