ASTROSAT CZTI

Data Quality Report

Orbit 54268

Creation date: 2025-10-09T14:17:15.308609
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_126T15_9000006516_54268cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54268cztM0_level2_quad_clean.evt
Size (bytes)722,790,72077,181,120
Size689.3 MB 73.6 MB
Events in quadrant A3,593,835587,447
Events in quadrant B3,114,302652,019
Events in quadrant C6,326,903485,467
Events in quadrant D13,244,254183,284

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152191
B0134301
C0230931
D0436321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61323064.990215%
B6132470.766471%
C6132110418.003914%
D6132435070.939335%

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 7267 6133 256 256 3.52% 4.17%
B 7267 6133 10 10 0.14% 0.16%
C 7267 6133 1056 1056 14.53% 17.22%
D 7267 6133 4123 4123 56.74% 67.23%

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 7 29 1026653 6504.17 638 622 157.7
A 13 248 23109 142.55 638 622 157.7
A 8 6 16041 97.74 638 622 157.7
B 7 0 224560 1623.94 643 621 137.9
B 5 236 132344 955.22 643 621 137.9
B 0 213 96851 697.83 643 621 137.9
C 1 29 3615063 23057.66 569 564 156.8
C 14 254 219160 1394.47 569 564 156.8
C 15 215 87604 555.25 569 564 156.8
D 8 176 11036490 106694.88 358 341 103.4
D 2 62 282080 2723.79 358 341 103.4
D 10 199 170951 1649.42 358 341 103.4

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