ASTROSAT CZTI

Data Quality Report

Orbit 52888

Creation date: 2025-07-16T12:38:09.815081
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_9000006482_52888cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52888cztM0_level2_quad_clean.evt
Size (bytes)563,734,08084,225,600
Size537.6 MB 80.3 MB
Events in quadrant A7,866,654501,117
Events in quadrant B3,927,826606,981
Events in quadrant C3,933,744535,499
Events in quadrant D4,687,997499,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274731
B0155281
C0157511
D0179061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A583296016.460905%
B58322223.806584%
C58332914.988857%
D58334127.063261%

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 6937 5832 868 868 12.51% 14.88%
B 6937 5832 106 106 1.53% 1.82%
C 6938 5833 238 238 3.43% 4.08%
D 6938 5833 380 380 5.48% 6.51%

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 4327703 28475.65 598 585 152.0
A 12 17 379457 2493.26 598 585 152.0
A 12 80 242577 1592.49 598 585 152.0
B 8 3 823998 6334.13 614 595 130.0
B 7 0 124197 950.82 614 595 130.0
B 4 81 78550 599.68 614 595 130.0
C 7 80 872580 5342.9 593 587 163.2
C 2 12 144665 882.8 593 587 163.2
C 1 45 121040 738.04 593 587 163.2
D 11 176 615271 3593.16 595 568 171.1
D 10 172 523319 3055.67 595 568 171.1
D 8 176 445996 2603.69 595 568 171.1

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