ASTROSAT CZTI

Data Quality Report

Orbit 56375

Creation date: 2026-02-28T09:29:47.021608
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_56375cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56375cztM0_level2_quad_clean.evt
Size (bytes)696,752,64074,439,360
Size664.5 MB 71.0 MB
Events in quadrant A14,072,962146,433
Events in quadrant B3,059,615638,042
Events in quadrant C4,160,953534,263
Events in quadrant D4,029,722514,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0458171
B0131881
C0166351
D0162761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6030476479.004975%
B6030781.293532%
C60313946.532913%
D60311823.017742%

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 7169 6029 4698 4698 65.53% 77.92%
B 7169 6029 20 20 0.28% 0.33%
C 7170 6030 348 348 4.85% 5.77%
D 7170 6030 160 160 2.23% 2.65%

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 7 64 5644082 61091.55 364 354 92.4
A 12 3 4544836 49192.56 364 354 92.4
A 4 95 1557807 16858.93 364 354 92.4
B 5 172 163280 1181.46 647 625 137.7
B 3 145 54210 389.22 647 625 137.7
B 4 21 53281 382.47 647 625 137.7
C 15 230 940604 5547.44 618 614 169.4
C 12 254 276627 1628.92 618 614 169.4
C 13 3 232934 1371.06 618 614 169.4
D 8 129 698223 3887.48 626 596 179.5
D 2 249 565481 3147.78 626 596 179.5
D 2 31 116279 644.64 626 596 179.5

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