ASTROSAT CZTI

Data Quality Report

Orbit 18503

Creation date: 2024-06-27T17:50:40.822773
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/AS1A05_075T08_9000002744_18503cztM0_level2.evt modeM0/AS1A05_075T08_9000002744_18503cztM0_level2_quad_clean.evt
Size (bytes)582,410,880121,184,640
Size555.4 MB 115.6 MB
Events in quadrant A4,523,060765,765
Events in quadrant B4,372,674795,557
Events in quadrant C4,096,144771,412
Events in quadrant D4,077,056754,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189613
B0185043
C0177303
D0181113

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83805005.966587%
B83804745.656325%
C83803614.307876%
D83802883.436754%

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 8510 8383 50 50 0.59% 0.60%
B 8510 8383 46 46 0.54% 0.55%
C 8510 8384 1 1 0.01% 0.01%
D 8510 8385 25 25 0.29% 0.30%

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 488884 2294.71 1040 1015 212.6
A 15 192 16507 72.87 1040 1015 212.6
A 13 254 11026 47.09 1040 1015 212.6
B 10 245 232813 1133.05 1041 1011 204.6
B 7 220 25737 120.86 1041 1011 204.6
B 12 111 24981 117.16 1041 1011 204.6
C 14 238 155582 653.06 1001 1007 236.7
C 3 233 24303 98.42 1001 1007 236.7
C 13 61 7282 26.51 1001 1007 236.7
D 7 238 137013 540.48 1019 987 251.7
D 2 234 33620 129.66 1019 987 251.7
D 7 38 27230 104.27 1019 987 251.7

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