ASTROSAT CZTI

Data Quality Report

Orbit 20210606_A10_053T37_9000004444_level2

Creation date: 2025-12-26T14:39:07.810244
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/AS1A10_053T37_9000004444cztM0_level2.fits modeM0/AS1A10_053T37_9000004444cztM0_level2_quad_clean.evt
Size (bytes)354,170,880181,074,240
Size337.8 MB 172.7 MB
Events in quadrant A2,229,758827,289
Events in quadrant B2,088,624824,561
Events in quadrant C2,167,778795,140
Events in quadrant D1,906,448700,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06900
B06920
C06920
D06920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0713160
B01042400
C0747190
D01054250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339793360.988846%
B339517292.147212%
C339697892.322706%
D3394613844.077064%

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 40550 34000 0 0 0.00% 0.00%
B 40551 33967 0 0 0.00% 0.00%
C 40551 33989 0 0 0.00% 0.00%
D 40551 33956 0 0 0.00% 0.00%

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 0 29 1835 9.18 581 549 140.0
A 7 110 1772 8.73 581 549 140.0
A 9 19 1662 7.95 581 549 140.0
B 2 9 1686 10.48 552 529 110.4
B 5 128 1445 8.3 552 529 110.4
B 3 17 1423 8.1 552 529 110.4
C 1 81 1707 8.0 573 540 145.9
C 1 80 1665 7.71 573 540 145.9
C 3 187 1506 6.62 573 540 145.9
D 15 46 1378 6.04 545 498 145.8
D 10 189 1334 5.73 545 498 145.8
D 3 14 1327 5.69 545 498 145.8

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