ASTROSAT CZTI

Data Quality Report

Orbit 21436

Creation date: 2024-06-27T18:27:47.612927
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/AS1T03_140T01_9000003160_21436cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21436cztM0_level2_quad_clean.evt
Size (bytes)514,330,56096,912,000
Size490.5 MB 92.4 MB
Events in quadrant A3,576,264637,353
Events in quadrant B3,577,635645,965
Events in quadrant C3,510,408617,696
Events in quadrant D4,483,288592,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146742
B0145972
C0144842
D0176252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63261101.738856%
B63261282.023396%
C63261682.655707%
D63262393.778059%

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 7596 6326 0 0 0.00% 0.00%
B 7596 6326 3 3 0.04% 0.05%
C 7596 6326 0 0 0.00% 0.00%
D 7596 6326 142 142 1.87% 2.24%

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 15 174 57647 314.58 912 898 180.4
A 13 254 9767 49.16 912 898 180.4
A 0 226 7997 39.35 912 898 180.4
B 0 197 22558 131.15 896 877 165.3
B 12 111 19148 110.52 896 877 165.3
B 11 111 17217 98.84 896 877 165.3
C 14 238 137977 697.38 863 872 196.6
C 13 61 6042 26.3 863 872 196.6
C 3 233 5460 23.34 863 872 196.6
D 7 38 237315 1123.63 878 858 210.4
D 12 235 231754 1097.2 878 858 210.4
D 1 20 170900 808.03 878 858 210.4

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