ASTROSAT CZTI

Data Quality Report

Orbit 15486

Creation date: 2024-06-27T17:09:23.428680
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/AS1G08_043T01_9000002288_15486cztM0_level2.evt modeM0/AS1G08_043T01_9000002288_15486cztM0_level2_quad_clean.evt
Size (bytes)482,037,120127,077,120
Size459.7 MB 121.2 MB
Events in quadrant A3,342,409867,737
Events in quadrant B3,811,822871,231
Events in quadrant C3,421,576844,893
Events in quadrant D3,595,850826,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140163
B0153932
C0143342
D0148302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286881.399936%
B62861211.924913%
C62861342.131721%
D62861392.211263%

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 7587 6287 1 1 0.01% 0.02%
B 7587 6288 28 28 0.37% 0.45%
C 7587 6287 0 0 0.00% 0.00%
D 7587 6288 55 55 0.72% 0.87%

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 7 16 14882 81.87 860 844 171.5
A 0 253 13083 71.38 860 844 171.5
A 0 226 7837 40.78 860 844 171.5
B 10 245 225419 1445.96 849 830 155.3
B 4 142 109584 700.19 849 830 155.3
B 0 229 51230 324.49 849 830 155.3
C 14 238 129755 695.09 820 828 185.5
C 3 233 87432 466.91 820 828 185.5
C 13 61 5940 27.56 820 828 185.5
D 1 52 243458 1210.74 836 814 200.4
D 7 38 75059 370.47 836 814 200.4
D 5 222 29281 142.04 836 814 200.4

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