ASTROSAT CZTI

Data Quality Report

Orbit 11694

Creation date: 2024-06-27T16:17:00.777751
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/AS1A04_227T01_9000001724_11694cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11694cztM0_level2_quad_clean.evt
Size (bytes)498,571,20066,683,520
Size475.5 MB 63.6 MB
Events in quadrant A4,231,894394,789
Events in quadrant B3,858,892399,464
Events in quadrant C3,122,687403,180
Events in quadrant D3,459,674382,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168873
B0153162
C0130982
D0142692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6290951.510334%
B62901832.909380%
C6290110.174881%
D6290280.445151%

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 7606 6292 21 21 0.28% 0.33%
B 7606 6292 80 80 1.05% 1.27%
C 7606 6292 0 0 0.00% 0.00%
D 7606 6292 15 15 0.20% 0.24%

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 8 5 568103 3511.46 817 804 161.6
A 1 162 157306 968.71 817 804 161.6
A 5 112 105426 647.59 817 804 161.6
B 4 239 460502 2974.09 823 807 154.6
B 3 64 73365 469.43 823 807 154.6
B 15 204 64542 412.35 823 807 154.6
C 13 61 5880 27.46 800 805 184.8
C 12 4 2025 6.6 800 805 184.8
C 3 202 1861 5.71 800 805 184.8
D 1 52 138709 734.6 787 769 187.8
D 13 104 86325 455.63 787 769 187.8
D 8 195 84761 447.3 787 769 187.8

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