ASTROSAT CZTI

Data Quality Report

Orbit 30685

Creation date: 2024-06-27T20:18:34.496346
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_094T81_9000004426_30685cztM0_level2.evt modeM0/AS1A10_094T81_9000004426_30685cztM0_level2_quad_clean.evt
Size (bytes)1,325,465,280217,143,360
Size1.2 GB 207.1 MB
Events in quadrant A6,129,9481,544,265
Events in quadrant B8,286,2631,553,022
Events in quadrant C5,890,3971,509,843
Events in quadrant D19,124,6241,235,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250202
B0322542
C0242822
D0641923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105872742.588080%
B105881661.567813%
C105882812.653948%
D10587441941.739870%

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 12907 10589 148 148 1.15% 1.40%
B 12908 10590 4 4 0.03% 0.04%
C 12908 10590 78 78 0.60% 0.74%
D 12907 10589 4736 4736 36.69% 44.73%

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 881336 3308.03 1355 1331 266.0
A 8 192 21820 77.02 1355 1331 266.0
A 13 254 18854 65.87 1355 1331 266.0
B 6 159 2931369 11834.38 1341 1310 247.6
B 12 111 29716 114.73 1341 1310 247.6
B 11 111 27384 105.31 1341 1310 247.6
C 10 22 367480 1219.2 1316 1323 300.3
C 14 238 218989 724.76 1316 1323 300.3
C 3 233 104045 342.03 1316 1323 300.3
D 8 195 9065599 32957.71 1185 1155 275.0
D 12 227 4095678 14887.41 1185 1155 275.0
D 10 253 788764 2863.69 1185 1155 275.0

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