ASTROSAT CZTI

Data Quality Report

Orbit 15977

Creation date: 2024-06-27T17:15:58.412728
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/AS1T02_100T01_9000002354_15977cztM0_level2.evt modeM0/AS1T02_100T01_9000002354_15977cztM0_level2_quad_clean.evt
Size (bytes)433,992,96097,473,600
Size413.9 MB 93.0 MB
Events in quadrant A3,085,945640,535
Events in quadrant B3,494,615640,977
Events in quadrant C3,116,590615,116
Events in quadrant D3,014,227611,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133712
B0143571
C0134791
D0134031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6359530.833464%
B6359651.022173%
C6359731.147979%
D6359370.581852%

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 7525 6360 0 0 0.00% 0.00%
B 7525 6360 15 15 0.20% 0.24%
C 7525 6361 0 0 0.00% 0.00%
D 7525 6360 3 3 0.04% 0.05%

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 9 143 11085 63.57 797 781 162.1
A 0 226 7182 39.49 797 781 162.1
A 12 194 6058 32.55 797 781 162.1
B 4 216 120188 802.03 787 770 148.9
B 7 220 89462 595.67 787 770 148.9
B 4 173 41286 272.11 787 770 148.9
C 14 238 114826 651.45 747 753 175.1
C 3 233 77779 439.88 747 753 175.1
C 0 207 8255 42.84 747 753 175.1
D 10 70 34644 183.93 766 745 184.3
D 1 52 29351 155.21 766 745 184.3
D 2 234 28249 149.23 766 745 184.3

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