ASTROSAT CZTI

Data Quality Report

Orbit 37456

Creation date: 2024-06-27T21:40:13.442247
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/AS1A11_027T01_9000005324_37456cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37456cztM0_level2_quad_clean.evt
Size (bytes)454,276,800107,231,040
Size433.2 MB 102.3 MB
Events in quadrant A3,126,844709,261
Events in quadrant B3,443,030710,766
Events in quadrant C3,010,553723,950
Events in quadrant D3,778,522693,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130443
B0142442
C0126532
D0151912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5879190.323184%
B58791793.044735%
C5879510.867494%
D58791021.734989%

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 7312 5880 6 6 0.08% 0.10%
B 7312 5880 106 106 1.45% 1.80%
C 7312 5880 42 42 0.57% 0.71%
D 7312 5880 99 99 1.35% 1.68%

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 10 83 321901 2391.56 658 643 134.3
A 15 222 149472 1107.94 658 643 134.3
A 12 189 31075 226.55 658 643 134.3
B 4 171 448321 3550.49 649 632 126.1
B 5 172 119294 941.07 649 632 126.1
B 5 200 71762 564.11 649 632 126.1
C 15 214 253477 1692.01 641 645 149.4
C 0 10 111796 743.85 641 645 149.4
C 14 254 100008 664.96 641 645 149.4
D 12 235 368195 2349.68 639 622 156.4
D 13 249 199809 1273.29 639 622 156.4
D 12 227 159095 1013.03 639 622 156.4

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