ASTROSAT CZTI

Data Quality Report

Orbit 35266

Creation date: 2022-04-06T23:40:27.883663
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_047T09_9000005054_35266cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35266cztM0_level2_quad_clean.evt
Size (bytes)634,397,76070,565,760
Size605.0 MB 67.3 MB
Events in quadrant A2,746,295470,369
Events in quadrant B7,655,358386,013
Events in quadrant C4,935,731433,918
Events in quadrant D3,484,101441,205

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118933
B0266852
C0183892
D0139392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5784170.293914%
B5784166528.786307%
C578466311.462656%
D57841162.005533%

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 7247 5785 0 0 0.00% 0.00%
B 7247 5785 1319 1319 18.20% 22.80%
C 7247 5785 532 532 7.34% 9.20%
D 7247 5785 84 84 1.16% 1.45%

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 103742 750.86 677 662 137.3
A 13 6 12633 87.2 677 662 137.3
A 13 254 10679 72.97 677 662 137.3
B 5 236 4438175 38309.29 596 580 115.8
B 5 172 551688 4757.66 596 580 115.8
B 4 232 219921 1893.55 596 580 115.8
C 0 10 2126351 14503.17 628 634 146.6
C 15 214 233771 1590.63 628 634 146.6
C 15 208 91054 616.91 628 634 146.6
D 8 195 260587 1618.99 654 637 160.6
D 13 249 175641 1089.94 654 637 160.6
D 2 249 136017 843.16 654 637 160.6

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