ASTROSAT CZTI

Data Quality Report

Orbit 41016

Creation date: 2024-06-27T22:23:19.398291
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/AS1A12_029T02_9000005590_41016cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41016cztM0_level2_quad_clean.evt
Size (bytes)358,801,92093,522,240
Size342.2 MB 89.2 MB
Events in quadrant A3,131,983617,532
Events in quadrant B2,599,646641,108
Events in quadrant C3,466,364604,326
Events in quadrant D3,632,482563,542

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129943
B0120222
C0139732
D0147442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5796581.000690%
B5796100.172533%
C57961712.950311%
D5796801.380262%

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 7139 5797 49 49 0.69% 0.85%
B 7139 5797 1 1 0.01% 0.02%
C 7139 5797 184 184 2.58% 3.17%
D 7139 5797 100 100 1.40% 1.73%

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 505101 3978.57 618 606 126.8
A 9 191 175612 1380.14 618 606 126.8
A 12 189 36929 286.45 618 606 126.8
B 0 190 163251 1342.91 618 600 121.1
B 12 111 15598 123.83 618 600 121.1
B 11 111 14304 113.15 618 600 121.1
C 14 254 812854 5817.2 602 606 139.6
C 15 214 245423 1753.34 602 606 139.6
C 0 10 36846 259.55 602 606 139.6
D 1 47 585098 3990.75 603 586 146.5
D 12 79 382062 2604.52 603 586 146.5
D 13 249 253431 1726.3 603 586 146.5

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