ASTROSAT CZTI

Data Quality Report

Orbit 43936

Creation date: 2024-06-27T22:57:23.874827
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_024T02_9000005918_43936cztM0_level2.fits modeM0/AS1A13_024T02_9000005918_43936cztM0_level2_quad_clean.evt
Size (bytes)498,870,720108,843,840
Size475.8 MB 103.8 MB
Events in quadrant A6,103,171715,428
Events in quadrant B3,154,961764,163
Events in quadrant C2,968,495735,784
Events in quadrant D5,733,105624,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230331
B0140681
C0136541
D0214961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65332824.316547%
B6534550.841751%
C6534160.244873%
D65345798.861341%

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 7683 6534 48 48 0.62% 0.73%
B 7684 6535 19 19 0.25% 0.29%
C 7684 6535 13 13 0.17% 0.20%
D 7684 6535 615 615 8.00% 9.41%

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 15 222 2161052 14947.28 702 690 144.5
A 10 83 1071691 7410.12 702 690 144.5
A 13 248 40552 275.8 702 690 144.5
B 0 213 117182 847.09 713 693 137.5
B 5 172 76477 551.09 713 693 137.5
B 0 200 67572 486.34 713 693 137.5
C 14 254 158157 964.23 700 704 163.3
C 3 233 46537 280.68 700 704 163.3
C 1 241 17752 104.4 700 704 163.3
D 12 17 1300250 7748.56 668 645 167.7
D 1 52 506220 3014.36 668 645 167.7
D 5 235 284016 1689.53 668 645 167.7

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