ASTROSAT CZTI

Data Quality Report

Orbit 36430

Creation date: 2022-07-19T03:08:25.474246
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/AS1C07_009T01_9000005200_36430cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36430cztM0_level2_quad_clean.evt
Size (bytes)1,454,785,920254,160,000
Size1.4 GB 242.4 MB
Events in quadrant A8,937,4421,618,317
Events in quadrant B14,196,6131,594,495
Events in quadrant C9,339,7661,627,191
Events in quadrant D10,301,9851,549,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389454
B0548534
C0393804
D0434924

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18991190.100047%
B1899115638.230214%
C18991760.400190%
D189911901.000474%

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 23377 18994 7 7 0.03% 0.04%
B 23377 18993 1127 1127 4.82% 5.93%
C 23377 18994 45 45 0.19% 0.24%
D 23377 18994 148 148 0.63% 0.78%

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 10 83 520440 1209.49 2140 2099 428.6
A 9 143 71439 161.8 2140 2099 428.6
A 13 254 34791 76.28 2140 2099 428.6
B 5 172 3985522 10387.85 2029 1971 383.5
B 5 255 1284987 3345.7 2029 1971 383.5
B 0 189 403185 1046.24 2029 1971 383.5
C 15 214 804769 1681.13 2080 2092 477.5
C 0 10 347119 722.63 2080 2092 477.5
C 12 249 39731 78.83 2080 2092 477.5
D 2 249 379295 749.37 2092 2038 503.4
D 12 16 329682 650.82 2092 2038 503.4
D 10 199 289297 570.6 2092 2038 503.4

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