ASTROSAT CZTI

Data Quality Report

Orbit 17916

Creation date: 2024-06-27T17:42:33.284189
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/AS1A05_096T06_9000002668_17916cztM0_level2.evt modeM0/AS1A05_096T06_9000002668_17916cztM0_level2_quad_clean.evt
Size (bytes)1,519,917,120395,375,040
Size1.4 GB 377.1 MB
Events in quadrant A10,465,9292,665,704
Events in quadrant B10,830,4232,722,012
Events in quadrant C9,789,0602,607,341
Events in quadrant D13,505,7892,514,559

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0458764
B0460484
C0437604
D0550574

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213073991.872624%
B213083411.600338%
C213083311.553407%
D2130810364.862024%

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 24672 21309 116 116 0.47% 0.54%
B 24673 21310 53 53 0.21% 0.25%
C 24673 21310 0 0 0.00% 0.00%
D 24673 21310 707 707 2.87% 3.32%

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 15 174 435970 860.34 2511 2456 503.9
A 4 2 321520 633.2 2511 2456 503.9
A 5 168 46220 86.85 2511 2456 503.9
B 7 220 340355 714.38 2521 2461 473.0
B 0 189 134822 279.84 2521 2461 473.0
B 4 216 110553 228.53 2521 2461 473.0
C 14 238 375617 665.84 2405 2411 560.5
C 3 233 27984 45.63 2405 2411 560.5
C 13 61 17016 26.06 2405 2411 560.5
D 5 222 1832636 2968.62 2389 2326 616.6
D 7 238 1515015 2453.47 2389 2326 616.6
D 2 165 287736 462.91 2389 2326 616.6

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