ASTROSAT CZTI

Data Quality Report

Orbit 13293

Creation date: 2024-06-27T16:38:54.342732
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_013T01_9000001976_13293cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13293cztM0_level2_quad_clean.evt
Size (bytes)701,328,96074,269,440
Size668.8 MB 70.8 MB
Events in quadrant A4,235,752526,869
Events in quadrant B7,050,139184,145
Events in quadrant C3,621,008531,041
Events in quadrant D5,812,389472,308

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174962
B0259791
C0157841
D0223771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76661722.243673%
B7666350645.734412%
C7666911.187060%
D766680010.435690%

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 7987 7668 21 21 0.26% 0.27%
B 7987 7667 898 898 11.24% 11.71%
C 7987 7668 0 0 0.00% 0.00%
D 7987 7668 564 564 7.06% 7.36%

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 15 454544 2360.64 938 919 192.2
A 15 69 116271 600.28 938 919 192.2
A 1 162 32727 165.53 938 919 192.2
B 4 239 4607759 39278.82 598 584 117.3
B 3 64 33523 280.82 598 584 117.3
B 0 214 17057 140.44 598 584 117.3
C 15 208 13446 58.33 920 928 214.6
C 13 61 6650 26.66 920 928 214.6
C 3 233 6109 24.14 920 928 214.6
D 1 52 1892761 8826.4 887 864 214.3
D 8 195 231736 1077.1 887 864 214.3
D 13 249 171649 796.78 887 864 214.3

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