ASTROSAT CZTI

Data Quality Report

Orbit 50230

Creation date: 2025-01-11T15:28:46.340704
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_003T01_9000006442_50230cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50230cztM0_level2_quad_clean.evt
Size (bytes)900,420,48069,871,680
Size858.7 MB 66.6 MB
Events in quadrant A4,474,102585,728
Events in quadrant B4,063,510635,727
Events in quadrant C13,712,966161,777
Events in quadrant D10,601,197299,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175441
B0162531
C0449591
D0357121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61912554.118882%
B61922854.602713%
C6192467275.452196%
D6192297047.965116%

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 7276 6192 155 155 2.13% 2.50%
B 7277 6193 219 219 3.01% 3.54%
C 7277 6193 4671 4671 64.19% 75.42%
D 7277 6193 3058 3058 42.02% 49.38%

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 471478 2917.47 655 640 161.4
A 8 38 317005 1960.3 655 640 161.4
A 4 3 121782 750.64 655 640 161.4
B 5 32 688170 4994.35 651 631 137.7
B 8 128 117414 848.32 651 631 137.7
B 10 28 92766 669.27 651 631 137.7
C 4 111 6794906 65714.66 366 363 103.4
C 15 197 3346893 32366.57 366 363 103.4
C 15 127 768624 7430.38 366 363 103.4
D 7 61 5557762 38687.35 500 481 143.6
D 15 58 642644 4470.46 500 481 143.6
D 15 108 573936 3992.14 500 481 143.6

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