ASTROSAT CZTI

Data Quality Report

Orbit 28036

Creation date: 2024-06-27T19:47:20.410333
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/AS1A10_048T02_9000004050_28036cztM0_level2.evt modeM0/AS1A10_048T02_9000004050_28036cztM0_level2_quad_clean.evt
Size (bytes)551,073,60071,029,440
Size525.5 MB 67.7 MB
Events in quadrant A3,365,591442,449
Events in quadrant B3,446,440448,931
Events in quadrant C3,572,801427,890
Events in quadrant D5,881,306395,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138200
B0141050
C0146460
D0220200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6251741.183811%
B6250901.440000%
C62511522.431611%
D62515919.454487%

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 7471 6251 3 3 0.04% 0.05%
B 7470 6250 2 2 0.03% 0.03%
C 7471 6251 8 8 0.11% 0.13%
D 7471 6251 552 552 7.39% 8.83%

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 7 16 11036 59.25 869 855 171.8
A 13 254 9895 52.61 869 855 171.8
A 3 137 7626 39.4 869 855 171.8
B 12 111 19419 114.53 872 852 162.1
B 11 111 17565 103.09 872 852 162.1
B 14 111 17185 100.75 872 852 162.1
C 14 238 139681 707.19 850 859 196.3
C 3 233 80402 405.21 850 859 196.3
C 10 22 42608 212.68 850 859 196.3
D 1 52 1787323 9181.3 821 802 194.6
D 8 195 973629 4999.56 821 802 194.6
D 2 234 20565 101.57 821 802 194.6

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