ASTROSAT CZTI

Data Quality Report

Orbit 32689

Creation date: 2024-06-27T20:40:51.985032
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/AS1T04_063T01_9000004724_32689cztM0_level2.evt modeM0/AS1T04_063T01_9000004724_32689cztM0_level2_quad_clean.evt
Size (bytes)152,593,92020,217,600
Size145.5 MB 19.3 MB
Events in quadrant A931,861130,196
Events in quadrant B868,631133,442
Events in quadrant C877,021128,416
Events in quadrant D1,841,025109,947

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037902
B035161
C034941
D065151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1475130.881356%
B1475140.949153%
C1475382.576271%
D147530620.745763%

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 2908 1476 3 3 0.10% 0.20%
B 2908 1476 0 0 0.00% 0.00%
C 2908 1476 29 29 1.00% 1.96%
D 2908 1476 260 260 8.94% 17.62%

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 15 249 186530 4881.67 181 177 38.2
A 0 253 27414 713.5 181 177 38.2
A 13 6 4584 115.44 181 177 38.2
B 0 219 77884 2116.5 182 178 36.7
B 0 199 36780 996.94 182 178 36.7
B 0 197 18684 504.05 182 178 36.7
C 0 10 67697 1612.62 174 175 41.9
C 9 236 59719 1422.08 174 175 41.9
C 3 233 43846 1042.99 174 175 41.9
D 2 250 296531 7456.81 162 159 39.7
D 12 3 222657 5598.12 162 159 39.7
D 12 2 149393 3754.78 162 159 39.7

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