ASTROSAT CZTI

Data Quality Report

Orbit 16568

Creation date: 2024-06-27T17:24:30.712342
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/AS1T03_018T01_9000002442_16568cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16568cztM0_level2_quad_clean.evt
Size (bytes)563,745,60088,056,000
Size537.6 MB 84.0 MB
Events in quadrant A3,785,490569,250
Events in quadrant B3,822,183587,322
Events in quadrant C4,721,179569,220
Events in quadrant D4,307,395491,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153092
B0155791
C0185301
D0171701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64412343.632976%
B64411362.111473%
C64411682.608291%
D6441107316.658904%

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 7432 6443 182 182 2.45% 2.82%
B 7432 6443 50 50 0.67% 0.78%
C 7432 6443 0 0 0.00% 0.00%
D 7432 6442 322 322 4.33% 5.00%

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 764872 4852.75 775 758 157.5
A 11 29 25276 155.71 775 758 157.5
A 15 223 10498 61.86 775 758 157.5
B 15 35 244582 1621.86 780 761 150.3
B 7 220 177397 1174.96 780 761 150.3
B 0 229 96715 638.27 780 761 150.3
C 3 233 1616394 9256.29 744 748 174.5
C 14 238 114922 654.12 744 748 174.5
C 7 247 90942 516.74 744 748 174.5
D 1 52 1191340 7023.12 690 669 169.5
D 10 70 214702 1262.46 690 669 169.5
D 7 38 137512 807.16 690 669 169.5

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