ASTROSAT CZTI

Data Quality Report

Orbit 38380

Creation date: 2024-06-27T21:51:50.371577
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/AS1A12_005T08_9000005380_38380cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38380cztM0_level2_quad_clean.evt
Size (bytes)435,617,280104,241,600
Size415.4 MB 99.4 MB
Events in quadrant A3,695,664701,389
Events in quadrant B3,429,230714,016
Events in quadrant C3,055,728699,963
Events in quadrant D5,458,602604,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151223
B0145072
C0130082
D0206282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6255600.959233%
B6255791.262990%
C6255120.191847%
D62553816.091127%

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 9061 6257 26 26 0.29% 0.42%
B 9061 6257 24 24 0.26% 0.38%
C 9061 6257 5 5 0.06% 0.08%
D 9061 6257 307 307 3.39% 4.91%

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 420529 2919.92 705 690 143.8
A 12 16 380901 2644.31 705 690 143.8
A 9 143 73398 505.67 705 690 143.8
B 0 183 459255 3357.95 701 682 136.6
B 15 35 54233 392.13 701 682 136.6
B 0 189 44331 319.62 701 682 136.6
C 15 214 264708 1630.72 693 697 161.9
C 14 254 57663 351.86 693 697 161.9
C 0 10 14868 87.53 693 697 161.9
D 10 203 1839704 10996.83 677 657 167.2
D 1 20 249227 1486.36 677 657 167.2
D 12 235 212490 1266.68 677 657 167.2

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