ASTROSAT CZTI

Data Quality Report

Orbit 23900

Creation date: 2024-06-27T18:59:54.797470
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/AS1A07_142T01_9000003540_23900cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23900cztM0_level2_quad_clean.evt
Size (bytes)540,002,88087,897,600
Size515.0 MB 83.8 MB
Events in quadrant A3,348,169574,309
Events in quadrant B3,428,908578,365
Events in quadrant C3,445,458542,673
Events in quadrant D5,685,771508,154

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138752
B0140542
C0141262
D0212053

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6568971.476857%
B65681041.583435%
C65681442.192448%
D656780312.227806%

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 7573 6569 0 0 0.00% 0.00%
B 7573 6569 1 1 0.01% 0.02%
C 7573 6569 22 22 0.29% 0.33%
D 7572 6568 455 455 6.01% 6.93%

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 13 254 11064 59.2 868 852 172.5
A 0 226 7510 38.6 868 852 172.5
A 3 137 7264 37.17 868 852 172.5
B 12 111 18750 110.25 863 845 162.4
B 11 111 16692 97.57 863 845 162.4
B 0 230 14481 83.96 863 845 162.4
C 14 238 130506 682.06 813 820 190.1
C 0 10 103178 538.33 813 820 190.1
C 7 247 32602 167.15 813 820 190.1
D 12 218 2106260 11015.73 780 758 191.1
D 1 52 216496 1128.71 780 758 191.1
D 8 195 130472 678.65 780 758 191.1

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