ASTROSAT CZTI

Data Quality Report

Orbit 48550

Creation date: 2024-09-19T22:38:39.466978
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/AS1A13_037T01_9000006436_48550cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48550cztM0_level2_quad_clean.evt
Size (bytes)441,463,680107,588,160
Size421.0 MB 102.6 MB
Events in quadrant A7,010,397687,733
Events in quadrant B3,055,092736,249
Events in quadrant C2,882,947710,251
Events in quadrant D2,861,566646,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257632
B0142672
C0140373
D0141002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68412874.195293%
B68411271.856454%
C6840360.526316%
D6840280.409357%

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 7797 6843 25 25 0.32% 0.37%
B 7797 6843 4 4 0.05% 0.06%
C 7796 6842 0 0 0.00% 0.00%
D 7796 6842 5 5 0.06% 0.07%

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 10 83 4144935 26988.48 731 715 153.6
A 7 3 16359 101.88 731 715 153.6
A 12 189 15505 96.32 731 715 153.6
B 12 16 58589 392.79 745 719 147.3
B 5 255 19548 127.8 745 719 147.3
B 12 111 19095 124.73 745 719 147.3
C 12 250 10788 57.96 733 736 173.4
C 3 233 8422 44.32 733 736 173.4
C 14 67 7210 37.33 733 736 173.4
D 2 249 57834 314.06 726 702 181.9
D 2 234 30924 166.13 726 702 181.9
D 2 233 23654 126.17 726 702 181.9

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