ASTROSAT CZTI

Data Quality Report

Orbit 53287

Creation date: 2025-08-04T14:48:00.648375
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_011T08_9000006492_53287cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53287cztM0_level2_quad_clean.evt
Size (bytes)832,893,12090,048,960
Size794.3 MB 85.9 MB
Events in quadrant A4,737,231679,720
Events in quadrant B4,131,134741,403
Events in quadrant C16,898,282185,611
Events in quadrant D4,483,878599,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196340
B0175980
C0552293
D0189030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74811592.125384%
B74821231.643945%
C7481555274.214677%
D74813775.039433%

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 7481 7481 168 168 2.25% 2.25%
B 7482 7482 73 73 0.98% 0.98%
C 7481 7481 5579 5579 74.58% 74.58%
D 7481 7481 261 261 3.49% 3.49%

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 671919 3567.05 760 742 188.2
A 4 5 526157 2792.38 760 742 188.2
A 4 159 153728 813.06 760 742 188.2
B 10 28 346934 2108.71 761 734 164.2
B 4 81 327960 1993.14 761 734 164.2
B 8 234 119290 722.13 761 734 164.2
C 1 241 10183492 83345.48 440 435 122.2
C 15 178 2122593 17369.27 440 435 122.2
C 15 224 1401742 11469.31 440 435 122.2
D 2 62 635831 3094.83 724 692 205.2
D 3 12 436702 2124.54 724 692 205.2
D 2 249 101600 491.69 724 692 205.2

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