ASTROSAT CZTI

Data Quality Report

Orbit 07788

Creation date: 2024-06-27T15:24:01.583400
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/AS1A02_132T01_9000001072_07788cztM0_level2.evt modeM0/AS1A02_132T01_9000001072_07788cztM0_level2_quad_clean.evt
Size (bytes)112,265,28031,734,720
Size107.1 MB 30.3 MB
Events in quadrant A756,754212,112
Events in quadrant B774,873216,953
Events in quadrant C763,213213,699
Events in quadrant D993,165199,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033122
B033161
C033181
D039341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1604281.745636%
B1604301.870324%
C1604281.745636%
D1604482.992519%

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 1604 1604 0 0 0.00% 0.00%
B 1604 1604 0 0 0.00% 0.00%
C 1604 1604 0 0 0.00% 0.00%
D 1604 1604 9 9 0.56% 0.56%

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 13 248 3321 75.14 195 191 41.7
A 0 226 1892 40.84 195 191 41.7
A 12 194 1681 35.77 195 191 41.7
B 0 219 7151 178.9 196 192 38.9
B 12 111 3831 93.55 196 192 38.9
B 11 111 3088 74.45 196 192 38.9
C 1 16 9215 193.32 193 194 46.7
C 13 61 1451 26.94 193 194 46.7
C 3 202 477 6.06 193 194 46.7
D 1 52 126541 2637.0 190 185 47.9
D 13 137 107220 2233.78 190 185 47.9
D 2 152 32744 679.49 190 185 47.9

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