ASTROSAT CZTI

Data Quality Report

Orbit 20630

Creation date: 2024-06-27T18:17:39.642006
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/AS1A05_007T06_9000003050_20630cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20630cztM0_level2_quad_clean.evt
Size (bytes)650,949,120105,439,680
Size620.8 MB 100.6 MB
Events in quadrant A3,421,237721,077
Events in quadrant B3,495,695713,861
Events in quadrant C3,639,215689,729
Events in quadrant D8,664,974561,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151233
B0153523
C0157453
D0308163

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7270350.481431%
B7270791.086657%
C72701161.595598%
D7270184625.392022%

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 7715 7272 4 4 0.05% 0.06%
B 7715 7272 11 11 0.14% 0.15%
C 7715 7272 0 0 0.00% 0.00%
D 7715 7272 1379 1379 17.87% 18.96%

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 5 16 107600 618.24 860 840 172.7
A 0 226 7524 38.71 860 840 172.7
A 12 194 6839 34.74 860 840 172.7
B 7 220 37940 228.96 855 831 162.1
B 0 190 25957 155.03 855 831 162.1
B 12 111 19011 112.17 855 831 162.1
C 8 208 252915 1292.01 831 835 195.1
C 14 238 131054 667.42 831 835 195.1
C 3 233 8347 38.5 831 835 195.1
D 1 52 5183895 28949.5 731 708 179.0
D 1 20 421949 2352.75 731 708 179.0
D 13 153 120603 669.65 731 708 179.0

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