ASTROSAT CZTI

Data Quality Report

Orbit 07574

Creation date: 2024-06-27T15:21:12.744335
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_024T01_9000001044_07574cztM0_level2.evt modeM0/AS1A02_024T01_9000001044_07574cztM0_level2_quad_clean.evt
Size (bytes)542,427,84096,289,920
Size517.3 MB 91.8 MB
Events in quadrant A3,946,859596,500
Events in quadrant B3,778,704609,841
Events in quadrant C3,764,352602,038
Events in quadrant D4,417,641574,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168304
B0164513
C0164863
D0184153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76561431.867816%
B76561802.351097%
C7656580.757576%
D76561672.181296%

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 7696 7658 27 27 0.35% 0.35%
B 7696 7658 3 3 0.04% 0.04%
C 7696 7658 3 3 0.04% 0.04%
D 7696 7658 79 79 1.03% 1.03%

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 15 239 347364 1810.16 932 910 191.4
A 3 1 14008 68.43 932 910 191.4
A 0 226 8919 41.84 932 910 191.4
B 0 214 58978 314.73 945 921 184.5
B 12 111 19153 98.84 945 921 184.5
B 0 230 17804 91.52 945 921 184.5
C 9 68 176591 815.86 911 915 215.3
C 1 16 19243 85.12 911 915 215.3
C 10 22 7460 30.4 911 915 215.3
D 2 152 554409 2477.0 902 874 223.5
D 2 14 291761 1301.68 902 874 223.5
D 5 233 122720 545.25 902 874 223.5

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