ASTROSAT CZTI

Data Quality Report

Orbit 38902

Creation date: 2024-06-27T21:57:57.914338
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/AS1T05_064T01_9000005416_38902cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38902cztM0_level2_quad_clean.evt
Size (bytes)398,833,92098,712,000
Size380.4 MB 94.1 MB
Events in quadrant A3,176,326655,709
Events in quadrant B2,672,451675,932
Events in quadrant C3,178,758652,499
Events in quadrant D5,268,092583,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130083
B0121232
C0132182
D0198152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019140.232597%
B601980.132912%
C6019110.182755%
D60192474.103672%

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 7303 6020 5 5 0.07% 0.08%
B 7303 6020 2 2 0.03% 0.03%
C 7303 6020 7 7 0.10% 0.12%
D 7303 6020 228 228 3.12% 3.79%

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 10 83 455204 3372.89 663 649 134.8
A 9 143 69961 514.31 663 649 134.8
A 13 248 49147 359.86 663 649 134.8
B 5 172 19914 150.28 661 642 128.2
B 0 230 18774 141.39 661 642 128.2
B 12 111 16305 122.14 661 642 128.2
C 3 233 323515 2122.88 649 651 152.1
C 15 214 248904 1632.3 649 651 152.1
C 14 254 69691 453.95 649 651 152.1
D 12 235 1576882 10076.46 639 620 156.4
D 5 222 393011 2508.41 639 620 156.4
D 12 227 248384 1583.86 639 620 156.4

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