ASTROSAT CZTI

Data Quality Report

Orbit 35202

Creation date: 2022-04-02T15:01:13.822495
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_004T01_9000005052_35202cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35202cztM0_level2_quad_clean.evt
Size (bytes)716,457,60074,819,520
Size683.3 MB 71.4 MB
Events in quadrant A2,671,506521,440
Events in quadrant B8,611,058389,145
Events in quadrant C3,030,790528,341
Events in quadrant D7,037,110464,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110693
B0291392
C0121422
D0245262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515490.174622%
B5154255849.631354%
C5154841.629802%
D515451910.069849%

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 7066 5155 1 1 0.01% 0.02%
B 7066 5155 1854 1854 26.24% 35.97%
C 7066 5155 53 53 0.75% 1.03%
D 7066 5155 536 536 7.59% 10.40%

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 100894 767.44 656 644 130.6
A 13 6 15296 112.16 656 644 130.6
A 9 143 10482 75.31 656 644 130.6
B 5 236 6425406 65816.94 516 505 97.6
B 0 190 44749 453.24 516 505 97.6
B 5 200 44416 449.83 516 505 97.6
C 15 214 220274 1508.62 634 639 145.6
C 0 10 181140 1239.82 634 639 145.6
C 1 23 109106 745.03 634 639 145.6
D 8 195 3611312 23813.82 621 605 151.6
D 10 118 221594 1457.5 621 605 151.6
D 5 223 171685 1128.33 621 605 151.6

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