ASTROSAT CZTI

Data Quality Report

Orbit 26236

Creation date: 2024-06-27T19:26:26.902813
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/AS1A09_079T03_9000003790_26236cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26236cztM0_level2_quad_clean.evt
Size (bytes)741,948,480117,639,360
Size707.6 MB 112.2 MB
Events in quadrant A5,010,663717,641
Events in quadrant B5,147,923737,176
Events in quadrant C4,766,374718,387
Events in quadrant D6,869,431698,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213920
B0217440
C0204820
D0271500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99711641.644770%
B99722372.376655%
C99721471.474128%
D99725895.906538%

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 10481 9971 70 70 0.67% 0.70%
B 10482 9972 110 110 1.05% 1.10%
C 10482 9972 1 1 0.01% 0.01%
D 10482 9972 428 428 4.08% 4.29%

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 0 13 428325 1782.32 1184 1158 239.7
A 13 254 15141 58.34 1184 1158 239.7
A 5 168 11575 43.46 1184 1158 239.7
B 5 172 492895 2194.56 1177 1149 224.1
B 12 111 27119 115.9 1177 1149 224.1
B 11 111 24152 102.66 1177 1149 224.1
C 14 238 181080 670.72 1142 1148 268.3
C 3 233 121764 449.61 1142 1148 268.3
C 2 16 12059 40.67 1142 1148 268.3
D 1 52 1764290 6526.62 1127 1101 270.2
D 12 233 725515 2681.49 1127 1101 270.2
D 7 38 56792 206.15 1127 1101 270.2

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