ASTROSAT CZTI

Data Quality Report

Orbit 30081

Creation date: 2024-06-27T20:10:48.940317
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_071T10_9000004328_30081cztM0_level2.evt modeM0/AS1A10_071T10_9000004328_30081cztM0_level2_quad_clean.evt
Size (bytes)563,777,28074,410,560
Size537.7 MB 71.0 MB
Events in quadrant A3,409,791473,215
Events in quadrant B5,221,188469,909
Events in quadrant C3,516,840445,835
Events in quadrant D4,482,789407,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138072
B0200083
C0141242
D0171682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65401011.544343%
B65391752.676250%
C65391492.278636%
D65395979.129836%

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 7596 6542 1 1 0.01% 0.02%
B 7595 6541 2 2 0.03% 0.03%
C 7595 6541 11 11 0.14% 0.17%
D 7595 6541 473 473 6.23% 7.23%

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 8 192 27607 151.66 877 860 176.4
A 13 254 11316 59.29 877 860 176.4
A 3 137 8626 44.03 877 860 176.4
B 6 159 1792725 10868.64 862 843 164.9
B 0 229 31815 187.86 862 843 164.9
B 12 111 20647 120.12 862 843 164.9
C 14 238 139011 711.5 828 835 194.2
C 3 233 115334 589.58 828 835 194.2
C 2 114 15083 73.37 828 835 194.2
D 13 104 1181156 6202.14 804 789 190.3
D 8 195 167093 873.83 804 789 190.3
D 2 250 49580 256.37 804 789 190.3

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