ASTROSAT CZTI

Data Quality Report

Orbit 49681

Creation date: 2024-12-10T13:55:15.994376
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/AS1T05_233T01_9000006438_49681cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49681cztM0_level2_quad_clean.evt
Size (bytes)1,163,301,12049,184,640
Size1.1 GB 46.9 MB
Events in quadrant A15,097,628270,989
Events in quadrant B4,366,361635,284
Events in quadrant C7,881,83219,285
Events in quadrant D15,248,778133,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489430
B0171250
C0276710
D0494270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6027584196.913888%
B60274697.781649%
C60286028100.000000%
D6028595198.722628%

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 7037 6027 5426 5426 77.11% 90.03%
B 7037 6029 241 241 3.42% 4.00%
C 7037 6027 413 413 5.87% 6.85%
D 7038 6028 5567 5567 79.10% 92.35%

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 4517492 45252.41 322 310 99.8
A 3 130 2151280 21548.08 322 310 99.8
A 4 60 1796269 17991.63 322 310 99.8
B 3 232 342657 2498.55 649 629 136.9
B 4 206 337374 2459.96 649 629 136.9
B 5 173 183304 1334.46 649 629 136.9
C 15 180 1887326 79091.86 41 38 23.9
C 15 163 1197921 50200.49 41 38 23.9
C 15 190 1130770 47386.35 41 38 23.9
D 15 40 3348361 46825.18 184 174 71.5
D 12 191 1407153 19676.93 184 174 71.5
D 7 45 1227234 17160.72 184 174 71.5

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