ASTROSAT CZTI

Data Quality Report

Orbit 58306

Creation date: 2026-07-08T07:14:26.170878
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_044T03_9000006588_58306cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58306cztM0_level2_quad_clean.evt
Size (bytes)586,601,28092,661,120
Size559.4 MB 88.4 MB
Events in quadrant A3,565,154639,737
Events in quadrant B5,242,435621,662
Events in quadrant C8,696,871489,178
Events in quadrant D3,680,838580,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155852
B0202492
C0305892
D0155733

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6811811.189253%
B681180511.819116%
C6811175125.708413%
D6810520.763583%

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 7836 6812 82 82 1.05% 1.20%
B 7836 6812 500 500 6.38% 7.34%
C 7836 6811 1691 1691 21.58% 24.83%
D 7835 6811 49 49 0.63% 0.72%

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 12 114 470513 2620.87 722 704 179.3
A 13 248 112365 622.91 722 704 179.3
A 2 143 43689 239.8 722 704 179.3
B 4 206 1821485 12499.45 678 653 145.7
B 0 156 218560 1495.86 678 653 145.7
B 5 185 132881 907.7 678 653 145.7
C 9 38 5815833 32910.09 641 633 176.7
C 12 249 239904 1354.11 641 633 176.7
C 6 223 53405 298.65 641 633 176.7
D 11 129 477857 2395.5 701 670 199.2
D 12 110 125305 625.67 701 670 199.2
D 2 249 112890 563.35 701 670 199.2

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