ASTROSAT CZTI

Data Quality Report

Orbit 26027

Creation date: 2024-06-27T19:24:01.201306
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_033T02_9000003762_26027cztM0_level2.evt modeM0/AS1A09_033T02_9000003762_26027cztM0_level2_quad_clean.evt
Size (bytes)490,688,64073,028,160
Size468.0 MB 69.6 MB
Events in quadrant A3,832,600447,985
Events in quadrant B3,523,421450,725
Events in quadrant C3,457,303427,999
Events in quadrant D3,606,359431,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151620
B0141410
C0138230
D0143900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64931892.910827%
B64941171.801663%
C64941322.032646%
D6494801.231906%

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 7728 6493 61 61 0.79% 0.94%
B 7729 6494 2 2 0.03% 0.03%
C 7729 6495 0 0 0.00% 0.00%
D 7729 6494 4 4 0.05% 0.06%

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 0 13 378753 2115.18 896 880 178.6
A 13 254 9100 46.01 896 880 178.6
A 0 226 7851 39.02 896 880 178.6
B 0 229 28376 166.29 879 861 165.5
B 0 190 27942 163.66 879 861 165.5
B 5 172 21350 123.83 879 861 165.5
C 14 238 140023 712.65 848 852 195.3
C 3 233 12720 60.77 848 852 195.3
C 13 61 5934 26.02 848 852 195.3
D 1 52 173855 807.7 873 855 214.2
D 7 223 49157 225.51 873 855 214.2
D 13 168 27822 125.9 873 855 214.2

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