ASTROSAT CZTI

Data Quality Report

Orbit 41238

Creation date: 2024-06-27T22:26:20.512242
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/AS1T05_102T01_9000005634_41238cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41238cztM0_level2_quad_clean.evt
Size (bytes)1,230,857,280330,624,000
Size1.1 GB 315.3 MB
Events in quadrant A12,354,5922,210,329
Events in quadrant B10,153,9922,268,260
Events in quadrant C11,203,4492,144,966
Events in quadrant D10,279,8641,989,300

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498186
B0442075
C0462225
D0456325

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04180
B04180
C04180
D04180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20288940.463328%
B202881840.906940%
C202884001.971609%
D202882341.153391%

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 27574 20293 62 62 0.22% 0.31%
B 27574 20293 120 120 0.44% 0.59%
C 27574 20293 381 381 1.38% 1.88%
D 27574 20292 201 201 0.73% 0.99%

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 8 1775602 3918.2 2229 2183 452.6
A 10 83 1711518 3776.62 2229 2183 452.6
A 2 79 131681 286.11 2229 2183 452.6
B 0 229 507831 1173.63 2215 2151 430.9
B 7 202 284880 656.18 2215 2151 430.9
B 0 186 273383 629.5 2215 2151 430.9
C 0 10 1012347 2002.0 2174 2191 504.6
C 15 214 848046 1676.38 2174 2191 504.6
C 9 54 785124 1551.67 2174 2191 504.6
D 13 249 555901 1053.36 2180 2126 525.7
D 2 120 438407 829.87 2180 2126 525.7
D 2 249 271164 511.75 2180 2126 525.7

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