ASTROSAT CZTI

Data Quality Report

Orbit 15391

Creation date: 2024-06-27T17:07:53.900274
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/AS1C03_001T01_9000002270_15391cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15391cztM0_level2_quad_clean.evt
Size (bytes)919,097,280117,184,320
Size876.5 MB 111.8 MB
Events in quadrant A3,629,750807,526
Events in quadrant B6,824,524764,243
Events in quadrant C3,755,399812,090
Events in quadrant D13,099,508621,724

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163623
B0256302
C0164402
D0442722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7799400.512886%
B779999712.783690%
C7799290.371843%
D7799337643.287601%

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 8550 7802 5 5 0.06% 0.06%
B 8550 7802 678 678 7.93% 8.69%
C 8550 7802 0 0 0.00% 0.00%
D 8550 7802 3015 3015 35.26% 38.64%

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 14 238 64393 344.6 904 881 184.3
A 9 143 29175 153.52 904 881 184.3
A 13 248 21071 109.55 904 881 184.3
B 10 245 2737508 16679.2 865 844 164.1
B 10 16 203343 1234.17 865 844 164.1
B 7 220 113116 684.27 865 844 164.1
C 3 233 247360 1188.3 893 897 207.4
C 10 22 8784 38.03 893 897 207.4
C 13 61 6452 26.78 893 897 207.4
D 13 122 9068502 48448.75 752 726 187.2
D 2 33 464847 2479.78 752 726 187.2
D 9 68 284471 1516.04 752 726 187.2

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