ASTROSAT CZTI

Data Quality Report

Orbit 25725

Creation date: 2024-06-27T19:20:49.699343
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_008T06_9000003748_25725cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25725cztM0_level2_quad_clean.evt
Size (bytes)704,404,80084,421,440
Size671.8 MB 80.5 MB
Events in quadrant A3,239,852592,058
Events in quadrant B3,442,938605,194
Events in quadrant C3,307,527581,362
Events in quadrant D10,884,636305,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140980
B0146910
C0141350
D0370210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67511031.525700%
B67511522.251518%
C67511562.310769%
D6751298344.186047%

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 7211 6753 0 0 0.00% 0.00%
B 7211 6752 10 10 0.14% 0.15%
C 7211 6752 0 0 0.00% 0.00%
D 7211 6752 2565 2565 35.57% 37.99%

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 13 254 11285 62.04 838 821 168.7
A 3 137 7836 41.59 838 821 168.7
A 0 226 7085 37.14 838 821 168.7
B 5 172 61287 375.25 837 817 161.1
B 4 171 37849 229.8 837 817 161.1
B 15 33 26549 159.68 837 817 161.1
C 14 238 131208 688.68 807 811 189.3
C 3 233 27183 139.28 807 811 189.3
C 1 16 5791 26.3 807 811 189.3
D 1 52 8204560 55939.83 597 579 146.7
D 7 80 300572 2045.54 597 579 146.7
D 12 227 63911 431.84 597 579 146.7

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