ASTROSAT CZTI

Data Quality Report

Orbit 21912

Creation date: 2024-06-27T18:33:51.098535
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/AS1A07_100T03_9000003242_21912cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21912cztM0_level2_quad_clean.evt
Size (bytes)433,491,840100,794,240
Size413.4 MB 96.1 MB
Events in quadrant A2,899,164675,762
Events in quadrant B3,117,956678,214
Events in quadrant C3,018,072654,493
Events in quadrant D3,696,985636,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124141
B0130811
C0126991
D0148381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5824500.858516%
B5825871.493562%
C58251111.905579%
D58251642.815451%

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 7025 5824 0 0 0.00% 0.00%
B 7026 5825 21 21 0.30% 0.36%
C 7026 5825 21 21 0.30% 0.36%
D 7026 5825 95 95 1.35% 1.63%

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 17 19920 129.72 744 729 147.9
A 13 254 10915 68.85 744 729 147.9
A 5 16 10287 64.61 744 729 147.9
B 3 64 108836 793.68 735 718 136.2
B 0 197 83030 604.24 735 718 136.2
B 0 190 26083 186.2 735 718 136.2
C 10 22 118702 720.62 713 718 163.7
C 14 238 114354 694.06 713 718 163.7
C 13 61 4972 25.98 713 718 163.7
D 1 52 877457 5079.72 721 700 172.6
D 2 136 36717 208.67 721 700 172.6
D 2 234 25311 142.59 721 700 172.6

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