ASTROSAT CZTI

Data Quality Report

Orbit 52253

Creation date: 2025-07-21T15:57:20.550524
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_52253cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52253cztM0_level2_quad_clean.evt
Size (bytes)733,780,80087,874,560
Size699.8 MB 83.8 MB
Events in quadrant A4,634,387609,603
Events in quadrant B7,263,626560,879
Events in quadrant C8,221,895501,037
Events in quadrant D6,523,360521,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184761
B0262901
C0290961
D0240854

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67092824.203309%
B6710137920.551416%
C6710144421.520119%
D67096679.941869%

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 7349 6711 167 167 2.27% 2.49%
B 7350 6712 835 835 11.36% 12.44%
C 7350 6712 1133 1133 15.41% 16.88%
D 7349 6711 626 626 8.52% 9.33%

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 1020255 5924.45 690 671 172.1
A 15 250 230670 1336.44 690 671 172.1
A 5 240 137063 792.53 690 671 172.1
B 12 32 2190415 16474.48 630 608 132.9
B 10 254 1099883 8270.12 630 608 132.9
B 0 213 343414 2579.01 630 608 132.9
C 15 224 3769364 22249.19 622 616 169.4
C 15 189 340946 2009.17 622 616 169.4
C 15 192 260420 1533.78 622 616 169.4
D 6 42 1942889 10402.64 657 627 186.7
D 8 176 1148003 6145.27 657 627 186.7
D 12 128 236162 1261.51 657 627 186.7

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