ASTROSAT CZTI

Data Quality Report

Orbit 04511

Creation date: 2024-06-27T14:43:07.821488
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/AS1G05_250T01_9000000568_04511cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04511cztM0_level2_quad_clean.evt
Size (bytes)428,676,48070,997,760
Size408.8 MB 67.7 MB
Events in quadrant A2,506,376483,241
Events in quadrant B2,769,148441,169
Events in quadrant C2,443,020450,476
Events in quadrant D4,889,824389,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139622270
B0148442665
C0138992414
D0237875697

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013216
B013230
C013222
D013216

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186
B0175
C0182
D0194

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5607220.392367%
B5508260.472041%
C5578120.215131%
D524164212.249571%

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 7617 6180 0 0 0.00% 0.00%
B 7617 6091 4 4 0.05% 0.07%
C 7617 6147 1 1 0.01% 0.02%
D 7614 5939 436 436 5.73% 7.34%

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 0 13 18166 135.29 635 621 129.7
A 0 50 16879 125.36 635 621 129.7
A 8 15 6783 47.51 635 621 129.7
B 4 80 240779 2006.95 622 606 119.7
B 8 3 50050 413.17 622 606 119.7
B 15 204 44942 370.48 622 606 119.7
C 9 247 36318 250.48 609 612 142.6
C 14 48 12945 86.52 609 612 142.6
C 9 54 11519 76.51 609 612 142.6
D 1 20 1627590 12102.0 550 535 134.4
D 10 40 559646 4158.66 550 535 134.4
D 11 132 227852 1690.78 550 535 134.4

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