ASTROSAT CZTI

Data Quality Report

Orbit 21225

Creation date: 2024-06-27T18:25:13.280586
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/AS1A06_005T05_9000003136_21225cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21225cztM0_level2_quad_clean.evt
Size (bytes)891,817,92073,226,880
Size850.5 MB 69.8 MB
Events in quadrant A14,175,580145,483
Events in quadrant B3,587,020537,299
Events in quadrant C3,390,157520,746
Events in quadrant D5,357,695498,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473551
B0154161
C0150101
D0209942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7374448960.876051%
B7374751.017087%
C7375730.989831%
D73742273.078384%

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 7654 7374 4419 4419 57.73% 59.93%
B 7654 7376 13 13 0.17% 0.18%
C 7655 7377 0 0 0.00% 0.00%
D 7654 7376 232 232 3.03% 3.15%

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 15 236 12208879 125342.19 484 474 97.4
A 13 252 53565 545.08 484 474 97.4
A 11 47 37729 382.49 484 474 97.4
B 0 197 48059 283.91 871 849 166.3
B 3 64 44097 260.08 871 849 166.3
B 0 190 24719 143.55 871 849 166.3
C 14 238 128835 650.61 835 840 196.7
C 13 61 5765 25.03 835 840 196.7
C 7 247 3302 12.51 835 840 196.7
D 13 174 1713776 8420.35 834 809 203.4
D 1 20 135940 664.26 834 809 203.4
D 7 238 125243 611.67 834 809 203.4

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