ASTROSAT CZTI

Data Quality Report

Orbit 53082

Creation date: 2025-07-21T22:25:25.755786
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_9000006488_53082cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53082cztM0_level2_quad_clean.evt
Size (bytes)940,841,28084,107,520
Size897.3 MB 80.2 MB
Events in quadrant A17,539,54288,819
Events in quadrant B4,054,307740,358
Events in quadrant C7,202,438612,191
Events in quadrant D5,450,636584,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0571500
B0174600
C0266442
D0215110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7478681691.147366%
B74781461.952394%
C747783411.154206%
D74786288.397967%

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 7477 7477 5643 5643 75.47% 75.47%
B 7478 7478 104 104 1.39% 1.39%
C 7477 7477 668 668 8.93% 8.93%
D 7478 7478 504 504 6.74% 6.74%

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 9 191 14970199 135857.5 438 426 110.2
A 3 14 305355 2767.37 438 426 110.2
A 0 250 101728 919.36 438 426 110.2
B 10 247 324826 2013.4 762 737 161.0
B 1 255 204994 1268.94 762 737 161.0
B 14 32 154647 956.16 762 737 161.0
C 15 224 3052960 15654.76 714 705 195.0
C 12 252 447787 2293.04 714 705 195.0
C 13 3 228959 1170.69 714 705 195.0
D 12 17 843521 4133.36 718 686 203.9
D 2 249 527136 2581.77 718 686 203.9
D 8 176 368948 1806.0 718 686 203.9

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