ASTROSAT CZTI

Data Quality Report

Orbit 15305

Creation date: 2024-06-27T17:06:38.913797
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/AS1T02_073T01_9000002260_15305cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15305cztM0_level2_quad_clean.evt
Size (bytes)141,747,84028,120,320
Size135.2 MB 26.8 MB
Events in quadrant A999,339173,928
Events in quadrant B1,092,393176,037
Events in quadrant C1,058,103177,292
Events in quadrant D996,468170,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044902
B046791
C045341
D045861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21161336.285444%
B21161486.994329%
C2116954.489603%
D21161085.103970%

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 2432 2117 0 0 0.00% 0.00%
B 2432 2117 1 1 0.04% 0.05%
C 2432 2117 0 0 0.00% 0.00%
D 2432 2117 6 6 0.25% 0.28%

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 9 143 2447 39.86 258 250 55.1
A 0 226 2359 38.27 258 250 55.1
A 7 32 1982 31.43 258 250 55.1
B 0 197 33003 613.97 260 253 53.3
B 10 16 23385 433.66 260 253 53.3
B 0 189 8931 162.69 260 253 53.3
C 3 233 57567 941.58 254 254 60.9
C 4 254 10409 166.83 254 254 60.9
C 13 61 1879 26.7 254 254 60.9
D 7 38 31563 499.09 251 242 62.8
D 2 234 8032 124.13 251 242 62.8
D 13 172 7357 113.38 251 242 62.8

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