ASTROSAT CZTI

Data Quality Report

Orbit 52220

Creation date: 2025-06-20T17:44:09.938475
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_9000006472_52220cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52220cztM0_level2_quad_clean.evt
Size (bytes)870,672,96071,228,160
Size830.3 MB 67.9 MB
Events in quadrant A3,945,910587,604
Events in quadrant B6,535,323552,992
Events in quadrant C8,116,080412,414
Events in quadrant D13,159,028176,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158491
B0236821
C0282741
D0433851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61182173.546911%
B6119105017.159667%
C6119203133.191698%
D6119424069.292368%

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 7193 6118 124 124 1.72% 2.03%
B 7194 6119 691 691 9.61% 11.29%
C 7194 6119 1673 1673 23.26% 27.34%
D 7193 6118 4182 4182 58.14% 68.36%

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 12 3 636103 3937.9 651 636 161.4
A 4 95 190966 1179.45 651 636 161.4
A 4 249 132602 817.78 651 636 161.4
B 10 254 1899299 14400.48 618 595 131.9
B 5 32 1409681 10687.03 618 595 131.9
B 10 44 143751 1085.75 618 595 131.9
C 15 224 3810313 26137.75 525 520 145.8
C 15 231 1505455 10324.87 525 520 145.8
C 12 252 242093 1657.35 525 520 145.8
D 6 42 9158669 82292.3 384 365 111.3
D 15 93 682117 6125.91 384 365 111.3
D 8 176 631717 5673.04 384 365 111.3

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