ASTROSAT CZTI

Data Quality Report

Orbit 52260

Creation date: 2025-07-21T17:37:44.456268
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_52260cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52260cztM0_level2_quad_clean.evt
Size (bytes)545,316,48048,859,200
Size520.1 MB 46.6 MB
Events in quadrant A2,642,303406,201
Events in quadrant B4,740,048384,885
Events in quadrant C9,795,0954,714
Events in quadrant D2,654,273364,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110650
B0171960
C0321950
D0113530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4536701.543210%
B453774016.310337%
C4537450099.184483%
D4537972.137977%

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 4536 4536 55 55 1.21% 1.21%
B 4537 4537 524 524 11.55% 11.55%
C 4536 4528 3089 3089 68.10% 68.22%
D 4537 4537 94 94 2.07% 2.07%

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 4 249 218350 1963.58 446 435 111.0
A 11 3 181824 1634.46 446 435 111.0
A 15 250 109266 980.65 446 435 111.0
B 12 32 1386341 15378.16 417 403 90.1
B 7 0 685078 7597.05 417 403 90.1
B 0 213 385381 4271.66 417 403 90.1
C 15 158 7798652 249822.47 108 107 31.2
C 15 224 685920 21969.67 108 107 31.2
C 15 178 598586 19171.97 108 107 31.2
D 8 176 244727 2013.8 428 409 121.3
D 11 176 143576 1180.06 428 409 121.3
D 7 46 109706 900.88 428 409 121.3

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