ASTROSAT CZTI

Data Quality Report

Orbit 54066

Creation date: 2025-09-26T10:55:55.476341
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_041T01_9000006510_54066cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54066cztM0_level2_quad_clean.evt
Size (bytes)488,053,44095,999,040
Size465.4 MB 91.6 MB
Events in quadrant A3,244,186645,179
Events in quadrant B5,887,735677,429
Events in quadrant C3,754,471597,938
Events in quadrant D4,684,599540,892

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142201
B0219491
C0157901
D0185611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63761352.117315%
B63764186.555834%
C63762834.438519%
D63764346.806775%

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 7546 6376 63 63 0.83% 0.99%
B 7546 6376 250 250 3.31% 3.92%
C 7546 6376 213 213 2.82% 3.34%
D 7546 6377 393 393 5.21% 6.16%

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 15 174 275690 1589.81 692 673 173.0
A 0 8 89801 515.23 692 673 173.0
A 4 3 59325 339.05 692 673 173.0
B 15 20 2242455 15570.0 678 656 144.0
B 5 236 412835 2862.71 678 656 144.0
B 7 252 222651 1541.82 678 656 144.0
C 15 157 487338 2647.97 669 661 183.8
C 13 3 359121 1950.35 669 661 183.8
C 9 53 100239 541.8 669 661 183.8
D 3 12 610507 3297.84 657 627 184.9
D 8 176 446216 2409.46 657 627 184.9
D 14 52 431145 2327.97 657 627 184.9

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