ASTROSAT CZTI

Data Quality Report

Orbit 31625

Creation date: 2024-06-27T20:30:48.923107
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/AS1A10_123T01_9000004620_31625cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31625cztM0_level2_quad_clean.evt
Size (bytes)2,597,077,440294,984,000
Size2.4 GB 281.3 MB
Events in quadrant A21,451,9661,787,264
Events in quadrant B21,288,5281,889,072
Events in quadrant C14,861,1551,880,423
Events in quadrant D19,480,2071,764,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0791304
B0797244
C0589288
D0742216

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04780
B04780
C04780
D04780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23417441918.870906%
B2341616196.914076%
C234159584.091394%
D2341713955.957211%

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 38534 23424 2817 2817 7.31% 12.03%
B 38534 23423 759 759 1.97% 3.24%
C 38534 23422 234 234 0.61% 1.00%
D 38534 23424 1142 1142 2.96% 4.88%

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 11397535 21980.9 2591 2535 518.4
A 13 254 43155 78.36 2591 2535 518.4
A 15 174 41620 75.39 2591 2535 518.4
B 6 159 6716643 12799.11 2756 2684 524.6
B 5 172 1336773 2543.23 2756 2684 524.6
B 10 245 1143896 2175.54 2756 2684 524.6
C 3 233 3480052 5448.8 2713 2729 638.2
C 14 238 448097 697.87 2713 2729 638.2
C 10 22 89145 135.41 2713 2729 638.2
D 8 195 5664912 8698.95 2705 2631 650.9
D 13 249 1758971 2698.26 2705 2631 650.9
D 2 250 537484 821.69 2705 2631 650.9

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