ASTROSAT CZTI

Data Quality Report

Orbit 41001

Creation date: 2024-06-27T22:23:11.324004
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_066T01_9000005584_41001cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_41001cztM0_level2_quad_clean.evt
Size (bytes)73,166,40020,825,280
Size69.8 MB 19.9 MB
Events in quadrant A702,443140,076
Events in quadrant B567,383141,374
Events in quadrant C639,665130,741
Events in quadrant D697,568123,640

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028821
B025791
C027021
D030041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126150.396511%
B126130.237906%
C1261211.665345%
D1261312.458366%

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 1261 1261 2 2 0.16% 0.16%
B 1260 1260 0 0 0.00% 0.00%
C 1260 1260 17 17 1.35% 1.35%
D 1260 1260 29 29 2.30% 2.30%

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 169064 5745.36 136 134 29.4
A 12 189 2914 94.55 136 134 29.4
A 13 254 1912 60.47 136 134 29.4
B 5 255 18288 625.49 137 133 29.0
B 4 81 4402 147.08 137 133 29.0
B 12 111 3567 118.31 137 133 29.0
C 15 214 58334 1735.34 134 134 33.5
C 0 10 51585 1534.11 134 134 33.5
C 14 254 5829 169.81 134 134 33.5
D 2 249 77495 2235.53 132 127 34.6
D 13 249 77488 2235.32 132 127 34.6
D 2 153 12266 350.75 132 127 34.6

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