ASTROSAT CZTI

Data Quality Report

Orbit 04021

Creation date: 2024-06-27T14:36:25.704640
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_173T01_9000000514_04021cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04021cztM0_level2_quad_clean.evt
Size (bytes)406,339,20074,128,320
Size387.5 MB 70.7 MB
Events in quadrant A3,078,763455,885
Events in quadrant B2,997,048461,115
Events in quadrant C2,760,939451,696
Events in quadrant D3,037,390433,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136042
B0131251
C0128351
D0137621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6340410.646688%
B634090.141956%
C634050.078864%
D6340771.214511%

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 7495 6341 22 22 0.29% 0.35%
B 7495 6341 1 1 0.01% 0.02%
C 7495 6341 1 1 0.01% 0.02%
D 7495 6341 64 64 0.85% 1.01%

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 50 229913 1542.47 726 712 148.6
A 0 5 26306 172.24 726 712 148.6
A 0 118 14913 95.57 726 712 148.6
B 15 204 89726 630.27 735 719 141.2
B 14 167 16688 113.08 735 719 141.2
B 0 183 14470 97.37 735 719 141.2
C 12 4 31532 189.3 695 698 162.9
C 10 65 11435 65.92 695 698 162.9
C 13 61 5980 32.43 695 698 162.9
D 2 232 217461 1284.49 690 669 168.8
D 13 223 62744 367.79 690 669 168.8
D 9 82 36183 210.42 690 669 168.8

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