ASTROSAT CZTI

Data Quality Report

Orbit 33736

Creation date: 2024-06-27T20:51:57.602981
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/AS1A11_086T01_9000004816_33736cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33736cztM0_level2_quad_clean.evt
Size (bytes)2,106,270,720244,598,400
Size2.0 GB 233.3 MB
Events in quadrant A10,678,6421,499,833
Events in quadrant B15,696,9801,472,302
Events in quadrant C12,298,8221,506,463
Events in quadrant D23,578,3701,358,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04640
B04640
C04640
D04640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0467135
B0612154
C0499234
D0862374

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22821440.192805%
B2282114746.458963%
C228212060.902677%
D22821268511.765479%

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 31516 22826 20 20 0.06% 0.09%
B 31516 22826 1196 1196 3.79% 5.24%
C 31516 22826 186 186 0.59% 0.81%
D 31516 22826 2617 2617 8.30% 11.46%

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 14 4 147947 274.58 2671 2618 529.3
A 15 237 88956 163.13 2671 2618 529.3
A 15 169 80676 147.48 2671 2618 529.3
B 5 172 4245068 8727.13 2583 2514 486.1
B 5 255 317539 648.02 2583 2514 486.1
B 0 245 200403 407.07 2583 2514 486.1
C 15 214 1026995 1735.63 2582 2601 590.2
C 14 254 522879 881.51 2582 2601 590.2
C 0 10 282212 473.75 2582 2601 590.2
D 8 195 5118993 8518.27 2466 2397 600.7
D 1 52 5040856 8388.19 2466 2397 600.7
D 7 80 812955 1349.44 2466 2397 600.7

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