ASTROSAT CZTI

Data Quality Report

Orbit 56389

Creation date: 2026-03-01T08:17:13.123853
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_083T05_9000006554_56389cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56389cztM0_level2_quad_clean.evt
Size (bytes)947,304,00079,030,080
Size903.4 MB 75.4 MB
Events in quadrant A10,653,211484,471
Events in quadrant B6,106,337616,946
Events in quadrant C3,354,829627,510
Events in quadrant D14,428,019191,036

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363582
B0228462
C0150062
D0475592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6779220632.541673%
B6779106815.754536%
C6779931.371884%
D6779467068.889217%

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 7879 6780 2335 2335 29.64% 34.44%
B 7879 6780 696 696 8.83% 10.27%
C 7879 6780 52 52 0.66% 0.77%
D 7879 6779 4024 4024 51.07% 59.36%

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 95 5999768 36166.66 663 648 165.9
A 4 249 591665 3563.04 663 648 165.9
A 12 3 563325 3392.19 663 648 165.9
B 4 206 1539454 10721.09 673 648 143.5
B 5 172 1289115 8976.94 673 648 143.5
B 5 185 333274 2317.46 673 648 143.5
C 12 254 182311 934.62 714 708 194.3
C 15 230 128852 659.49 714 708 194.3
C 2 255 104209 532.67 714 708 194.3
D 8 129 12058147 108199.34 384 366 111.4
D 12 3 185629 1662.44 384 366 111.4
D 8 240 160318 1435.31 384 366 111.4

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