ASTROSAT CZTI

Data Quality Report

Orbit 03531

Creation date: 2024-06-27T14:30:35.872144
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_045T01_9000000468_03531cztM0_level2.evt modeM0/AS1G05_045T01_9000000468_03531cztM0_level2_quad_clean.evt
Size (bytes)579,216,96084,340,800
Size552.4 MB 80.4 MB
Events in quadrant A4,419,674539,801
Events in quadrant B3,792,601538,763
Events in quadrant C5,877,712520,084
Events in quadrant D3,031,553521,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172732
B0155931
C0217181
D0134251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62081782.867268%
B62081101.771907%
C620876312.290593%
D6208921.481959%

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 7483 6208 27 27 0.36% 0.43%
B 7483 6208 23 23 0.31% 0.37%
C 7483 6208 666 666 8.90% 10.73%
D 7482 6207 30 30 0.40% 0.48%

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 15 1350903 9002.22 739 724 150.0
A 0 50 193207 1283.37 739 724 150.0
A 0 118 14925 94.68 739 724 150.0
B 15 204 291821 2044.3 753 736 142.4
B 8 3 145198 1014.56 753 736 142.4
B 3 0 112090 782.04 753 736 142.4
C 4 248 3046980 18793.33 706 710 162.1
C 1 16 54208 330.04 706 710 162.1
C 13 61 6024 32.78 706 710 162.1
D 13 70 185901 1064.67 731 711 173.9
D 13 223 27638 154.81 731 711 173.9
D 13 239 12854 69.81 731 711 173.9

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