ASTROSAT CZTI

Data Quality Report

Orbit 52321

Creation date: 2025-07-22T17:43:34.399785
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_011T05_9000006474_52321cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52321cztM0_level2_quad_clean.evt
Size (bytes)730,088,64087,549,120
Size696.3 MB 83.5 MB
Events in quadrant A3,402,573634,254
Events in quadrant B5,075,067653,050
Events in quadrant C7,387,691502,022
Events in quadrant D10,650,696401,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146512
B0198252
C0265637
D0362282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65811171.777845%
B65824046.137952%
C6581146422.245859%
D6581232835.374563%

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 7646 6582 73 73 0.95% 1.11%
B 7647 6583 204 204 2.67% 3.10%
C 7646 6582 1378 1378 18.02% 20.94%
D 7646 6582 2464 2464 32.23% 37.44%

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 11 3 171182 990.15 689 671 172.2
A 4 3 139707 807.37 689 671 172.2
A 5 240 82247 473.71 689 671 172.2
B 7 0 1050647 7300.31 674 653 143.8
B 4 171 385777 2677.66 674 653 143.8
B 10 254 249109 1727.44 674 653 143.8
C 15 224 2970449 17598.98 601 595 168.8
C 9 38 652328 3862.09 601 595 168.8
C 13 3 538055 3184.92 601 595 168.8
D 12 17 2534836 15549.32 560 534 163.0
D 12 6 1843448 11307.28 560 534 163.0
D 15 93 1199431 7355.89 560 534 163.0

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