ASTROSAT CZTI

Data Quality Report

Orbit 39160

Creation date: 2024-06-27T22:01:14.890114
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/AS1A12_054T02_9000005444_39160cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39160cztM0_level2_quad_clean.evt
Size (bytes)436,377,60084,493,440
Size416.2 MB 80.6 MB
Events in quadrant A2,784,365616,147
Events in quadrant B2,394,754617,223
Events in quadrant C2,503,644584,390
Events in quadrant D8,062,931373,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115573
B0107932
C0107042
D0275922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5237250.477373%
B5237340.649227%
C523790.171854%
D5237190436.356693%

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 7061 5238 9 9 0.13% 0.17%
B 7061 5238 13 13 0.18% 0.25%
C 7061 5238 5 5 0.07% 0.10%
D 7061 5238 1639 1639 23.21% 31.29%

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 433159 3625.52 584 574 119.3
A 13 248 45905 379.92 584 574 119.3
A 15 223 25881 212.1 584 574 119.3
B 5 172 104064 926.65 579 563 111.7
B 0 213 14368 123.6 579 563 111.7
B 12 111 13695 117.57 579 563 111.7
C 15 214 219478 1672.53 568 571 130.9
C 3 233 19507 144.67 568 571 130.9
C 9 187 18447 136.58 568 571 130.9
D 12 235 5275551 43321.83 494 481 121.8
D 2 249 296157 2428.26 494 481 121.8
D 2 120 197569 1618.6 494 481 121.8

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