ASTROSAT CZTI

Data Quality Report

Orbit 56565

Creation date: 2026-03-13T09:59:48.356314
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_083T06_9000006558_56565cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56565cztM0_level2_quad_clean.evt
Size (bytes)431,861,76092,128,320
Size411.9 MB 87.9 MB
Events in quadrant A3,940,817611,561
Events in quadrant B3,133,013679,722
Events in quadrant C4,460,217519,581
Events in quadrant D3,964,895541,445

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159732
B0135833
C0178702
D0160952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62642053.272669%
B6263330.526904%
C626371711.448188%
D62631532.442919%

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 7489 6265 172 172 2.30% 2.75%
B 7488 6264 12 12 0.16% 0.19%
C 7488 6264 589 589 7.87% 9.40%
D 7488 6264 130 130 1.74% 2.08%

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 8 447198 2692.58 670 653 165.8
A 4 249 252111 1516.24 670 653 165.8
A 7 64 224796 1351.54 670 653 165.8
B 4 171 105662 722.99 679 654 145.2
B 0 173 67391 459.49 679 654 145.2
B 7 252 67232 458.4 679 654 145.2
C 15 230 1533724 9183.08 603 596 167.0
C 6 223 174599 1042.24 603 596 167.0
C 5 250 101968 607.19 603 596 167.0
D 8 129 386860 2106.13 640 610 183.4
D 2 31 320490 1744.23 640 610 183.4
D 13 153 265133 1442.38 640 610 183.4

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