ASTROSAT CZTI

Data Quality Report

Orbit 36602

Creation date: 2024-06-27T21:29:00.827566
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/AS1A11_097T24_9000005224_36602cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36602cztM0_level2_quad_clean.evt
Size (bytes)905,094,720145,909,440
Size863.2 MB 139.2 MB
Events in quadrant A5,241,440948,636
Events in quadrant B5,595,515952,788
Events in quadrant C5,859,890907,122
Events in quadrant D9,985,521863,626

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225754
B0236373
C0239763
D0372483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10785200.185443%
B107852232.067687%
C107852111.956421%
D107857066.546129%

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 13620 10787 4 4 0.03% 0.04%
B 13620 10787 114 114 0.84% 1.06%
C 13620 10787 140 140 1.03% 1.30%
D 13620 10787 625 625 4.59% 5.79%

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 10 83 348353 1405.46 1239 1213 247.0
A 15 223 61648 244.68 1239 1213 247.0
A 9 143 32268 125.73 1239 1213 247.0
B 4 171 439485 1893.68 1211 1180 231.5
B 0 213 136928 586.49 1211 1180 231.5
B 0 219 96446 411.59 1211 1180 231.5
C 0 10 559524 2025.58 1186 1195 275.6
C 15 214 457029 1653.73 1186 1195 275.6
C 0 207 126888 456.0 1186 1195 275.6
D 12 235 3737355 13128.46 1171 1138 284.6
D 2 137 776500 2724.49 1171 1138 284.6
D 2 250 298975 1046.55 1171 1138 284.6

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