ASTROSAT CZTI

Data Quality Report

Orbit 33236

Creation date: 2024-06-27T20:46:26.182582
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/AS1A10_067T01_9000004774_33236cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33236cztM0_level2_quad_clean.evt
Size (bytes)608,065,92048,314,880
Size579.9 MB 46.1 MB
Events in quadrant A2,728,757291,704
Events in quadrant B4,841,356280,852
Events in quadrant C2,970,468284,158
Events in quadrant D7,525,337242,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109752
B0179641
C0117061
D0259671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517370.135318%
B517375414.575681%
C5173811.565823%
D517388117.030737%

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 7326 5174 0 0 0.00% 0.00%
B 7326 5174 493 493 6.73% 9.53%
C 7326 5174 55 55 0.75% 1.06%
D 7326 5174 745 745 10.17% 14.40%

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 13 6 16517 115.86 695 684 136.7
A 12 16 9158 62.01 695 684 136.7
A 13 254 8778 59.23 695 684 136.7
B 5 172 1874105 15864.54 629 616 118.1
B 4 170 146475 1235.12 629 616 118.1
B 0 190 93186 783.87 629 616 118.1
C 0 10 235978 1544.15 670 677 152.4
C 1 23 40688 262.57 670 677 152.4
C 10 49 35768 230.28 670 677 152.4
D 8 195 2910839 18479.17 638 621 157.5
D 7 80 718923 4561.04 638 621 157.5
D 12 3 527143 3343.29 638 621 157.5

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