ASTROSAT CZTI

Data Quality Report

Orbit 24326

Creation date: 2024-06-27T19:04:47.352331
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/AS1A07_145T01_9000003594_24326cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24326cztM0_level2_quad_clean.evt
Size (bytes)1,708,920,000218,257,920
Size1.6 GB 208.1 MB
Events in quadrant A8,656,1621,360,105
Events in quadrant B15,892,0231,368,550
Events in quadrant C12,501,4591,322,078
Events in quadrant D13,468,8871,293,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375633
B0589553
C0490323
D0523833

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183731630.887171%
B1837312947.042943%
C183738384.561041%
D183747003.809731%

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 20403 18373 2 2 0.01% 0.01%
B 20403 18373 291 291 1.43% 1.58%
C 20403 18373 378 378 1.85% 2.06%
D 20404 18374 455 455 2.23% 2.48%

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 3 1 52155 111.65 2230 2182 447.6
A 13 254 26815 55.03 2230 2182 447.6
A 3 137 20605 41.16 2230 2182 447.6
B 4 200 7075444 16817.01 2198 2141 420.6
B 5 32 69182 159.39 2198 2141 420.6
B 12 111 52219 119.06 2198 2141 420.6
C 2 16 2607613 5270.25 2117 2130 494.4
C 7 247 1186991 2396.68 2117 2130 494.4
C 14 238 332143 667.54 2117 2130 494.4
D 1 52 2692846 5180.69 2143 2079 519.4
D 7 223 1095160 2104.57 2143 2079 519.4
D 12 218 820654 1576.05 2143 2079 519.4

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