ASTROSAT CZTI

Data Quality Report

Orbit 26994

Creation date: 2024-06-27T19:35:22.318754
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/AS1A09_145T01_9000003900_26994cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26994cztM0_level2_quad_clean.evt
Size (bytes)630,086,400104,904,000
Size600.9 MB 100.0 MB
Events in quadrant A6,174,595660,582
Events in quadrant B3,458,588724,985
Events in quadrant C3,529,093695,636
Events in quadrant D5,495,994657,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227240
B0143100
C0145430
D0205330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626980712.872866%
B6269560.893284%
C62691221.946084%
D62685178.248245%

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 7529 6269 517 517 6.87% 8.25%
B 7529 6269 0 0 0.00% 0.00%
C 7529 6269 3 3 0.04% 0.05%
D 7528 6269 374 374 4.97% 5.97%

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 14 235 1933633 11512.97 839 825 167.9
A 6 16 968456 5763.79 839 825 167.9
A 8 192 29820 172.71 839 825 167.9
B 12 111 18938 108.86 883 866 166.0
B 11 111 16773 95.82 883 866 166.0
B 14 111 15300 86.95 883 866 166.0
C 14 238 138885 685.29 860 872 201.4
C 15 208 30261 145.93 860 872 201.4
C 13 61 5794 24.44 860 872 201.4
D 1 52 1372508 6929.63 834 818 197.9
D 5 222 579298 2922.42 834 818 197.9
D 11 176 220028 1107.43 834 818 197.9

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