ASTROSAT CZTI

Data Quality Report

Orbit 11511

Creation date: 2024-06-27T16:14:02.348499
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/AS1A04_021T06_9000001688_11511cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11511cztM0_level2_quad_clean.evt
Size (bytes)688,394,880109,005,120
Size656.5 MB 104.0 MB
Events in quadrant A6,931,952643,280
Events in quadrant B4,971,946690,294
Events in quadrant C3,642,378740,497
Events in quadrant D4,777,357687,843

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259583
B0198822
C0162712
D0195812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7750102113.174194%
B77503995.148387%
C7750760.980645%
D77502923.767742%

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 8471 7755 498 498 5.88% 6.42%
B 8471 7755 142 142 1.68% 1.83%
C 8471 7755 0 0 0.00% 0.00%
D 8471 7755 175 175 2.07% 2.26%

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 5 2802471 15550.08 887 868 180.2
A 15 223 211350 1168.26 887 868 180.2
A 14 238 172820 954.41 887 868 180.2
B 4 239 658278 3679.57 930 904 178.7
B 11 51 233803 1303.62 930 904 178.7
B 3 64 189343 1054.76 930 904 178.7
C 13 61 6932 27.15 932 937 220.8
C 14 234 3417 11.23 932 937 220.8
C 8 128 3241 10.43 932 937 220.8
D 1 52 437143 1946.56 920 895 224.1
D 2 120 320689 1426.94 920 895 224.1
D 10 253 178427 792.16 920 895 224.1

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