ASTROSAT CZTI

Data Quality Report

Orbit 17474

Creation date: 2024-06-27T17:36:58.237097
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_196T01_9000002584_17474cztM0_level2.evt modeM0/AS1A05_196T01_9000002584_17474cztM0_level2_quad_clean.evt
Size (bytes)182,350,08025,980,480
Size173.9 MB 24.8 MB
Events in quadrant A1,292,826155,447
Events in quadrant B1,332,262155,630
Events in quadrant C1,279,436150,969
Events in quadrant D1,444,458143,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054601
B055021
C054121
D060231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25191074.247717%
B25201144.523810%
C25201134.484127%
D25201295.119048%

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 3394 2519 2 2 0.06% 0.08%
B 3395 2520 0 0 0.00% 0.00%
C 3395 2521 0 0 0.00% 0.00%
D 3395 2521 34 34 1.00% 1.35%

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 15942 228.18 330 322 68.5
A 4 2 9382 132.35 330 322 68.5
A 0 226 2948 38.36 330 322 68.5
B 0 189 38647 585.7 326 318 65.4
B 4 216 8503 125.07 326 318 65.4
B 12 111 7453 109.03 326 318 65.4
C 14 238 48614 645.88 310 312 74.8
C 5 218 15718 206.0 310 312 74.8
C 5 219 3479 42.35 310 312 74.8
D 10 70 151170 1945.4 308 297 77.6
D 13 232 52999 679.55 308 297 77.6
D 7 238 36366 465.08 308 297 77.6

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