ASTROSAT CZTI

Data Quality Report

Orbit 43648

Creation date: 2024-06-27T22:54:03.765540
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_068T05_9000005894_43648cztM0_level2.fits modeM0/AS1A12_068T05_9000005894_43648cztM0_level2_quad_clean.evt
Size (bytes)837,578,88097,971,840
Size798.8 MB 93.4 MB
Events in quadrant A4,084,378760,923
Events in quadrant B3,871,816760,491
Events in quadrant C14,920,545383,001
Events in quadrant D7,647,465626,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167841
B0154651
C0485665
D0271091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61991221.968059%
B61991993.210195%
C6198538186.818328%
D6198122419.748306%

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 7379 6200 9 9 0.12% 0.15%
B 7379 6199 105 105 1.42% 1.69%
C 7378 6198 5300 5300 71.84% 85.51%
D 7378 6198 1022 1022 13.85% 16.49%

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 813053 5431.62 733 719 149.6
A 2 79 85049 563.87 733 719 149.6
A 15 222 70600 467.25 733 719 149.6
B 5 235 409103 2983.62 717 695 136.9
B 4 206 222288 1618.84 717 695 136.9
B 10 128 103629 751.98 717 695 136.9
C 15 142 7471668 83532.46 383 385 89.4
C 15 158 1587980 17750.06 383 385 89.4
C 3 233 1544721 17266.4 383 385 89.4
D 8 192 1241157 7142.21 680 659 173.7
D 4 221 474698 2729.3 680 659 173.7
D 12 6 430286 2473.59 680 659 173.7

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