ASTROSAT CZTI

Data Quality Report

Orbit 25094

Creation date: 2024-06-27T19:13:45.046269
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/AS1T03_206T01_9000003672_25094cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25094cztM0_level2_quad_clean.evt
Size (bytes)566,248,32086,420,160
Size540.0 MB 82.4 MB
Events in quadrant A3,122,248571,053
Events in quadrant B3,159,774579,259
Events in quadrant C3,856,822537,252
Events in quadrant D6,582,231488,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131410
B0134780
C0155520
D0240600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318671.060462%
B6318841.329535%
C63181953.086420%
D631881612.915480%

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 7223 6318 0 0 0.00% 0.00%
B 7223 6318 6 6 0.08% 0.09%
C 7223 6318 53 53 0.73% 0.84%
D 7223 6318 689 689 9.54% 10.91%

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 17 125751 793.3 777 759 157.6
A 13 254 10171 59.74 777 759 157.6
A 3 137 6841 38.6 777 759 157.6
B 5 172 60510 403.3 771 752 148.2
B 0 229 44061 292.29 771 752 148.2
B 0 190 37824 250.19 771 752 148.2
C 7 247 682847 3913.81 737 742 174.3
C 14 238 116074 661.76 737 742 174.3
C 0 207 110706 630.96 737 742 174.3
D 8 195 1303758 7349.56 723 701 177.3
D 12 33 1290768 7276.3 723 701 177.3
D 12 233 548326 3088.74 723 701 177.3

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