ASTROSAT CZTI

Data Quality Report

Orbit 20190327_A05_163T01_9000002820_level2

Creation date: 2025-11-29T00:00:50.220536
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_163T01_9000002820cztM0_level2.fits modeM0/AS1A05_163T01_9000002820cztM0_level2_quad_clean.evt
Size (bytes)1,929,551,0401,495,667,520
Size1.8 GB 1.4 GB
Events in quadrant A10,460,6706,298,296
Events in quadrant B11,329,1568,459,021
Events in quadrant C12,152,2528,704,743
Events in quadrant D10,310,6687,684,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08053640
B06042410
C04425330
D05887960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042080
B042080
C042080
D042080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2064805424226.269857%
B206480203959.877470%
C20648036051.745932%
D206480155447.528090%

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 239461 203296 0 0 0.00% 0.00%
B 239462 205964 0 0 0.00% 0.00%
C 239462 206481 0 0 0.00% 0.00%
D 239462 206329 0 0 0.00% 0.00%

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 0 29 8891 9.55 2728 2563 662.7
A 7 110 8491 8.95 2728 2563 662.7
A 9 19 7837 7.96 2728 2563 662.7
B 2 9 9225 10.96 3005 2869 580.0
B 2 8 7903 8.68 3005 2869 580.0
B 5 225 7525 8.03 3005 2869 580.0
C 12 241 8350 6.54 3212 2997 818.3
C 3 126 8247 6.42 3212 2997 818.3
C 3 158 8016 6.13 3212 2997 818.3
D 10 190 7819 6.65 2940 2680 772.9
D 3 14 7583 6.34 2940 2680 772.9
D 10 189 7331 6.02 2940 2680 772.9

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