ASTROSAT CZTI

Data Quality Report

Orbit 22024

Creation date: 2024-06-27T18:35:27.561720
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/AS1A07_059T05_9000003252_22024cztM0_level2.evt modeM0/AS1A07_059T05_9000003252_22024cztM0_level2_quad_clean.evt
Size (bytes)1,279,716,480219,404,160
Size1.2 GB 209.2 MB
Events in quadrant A8,064,9721,403,633
Events in quadrant B8,519,3531,421,396
Events in quadrant C8,435,2881,355,711
Events in quadrant D12,573,3351,277,147

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352164
B0362144
C0360284
D0494044

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17217960.557588%
B172181700.987339%
C172182541.475200%
D1721810846.295737%

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 18537 17221 0 0 0.00% 0.00%
B 18538 17220 25 25 0.13% 0.15%
C 18538 17221 71 71 0.38% 0.41%
D 18538 17221 938 938 5.06% 5.45%

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 15 236 59401 137.5 2075 2025 417.3
A 13 254 31004 69.45 2075 2025 417.3
A 0 226 17844 37.91 2075 2025 417.3
B 3 64 145475 364.04 2070 2017 394.1
B 0 190 104389 259.78 2070 2017 394.1
B 0 230 90351 224.16 2070 2017 394.1
C 10 22 316454 675.3 1990 2003 465.6
C 14 238 311057 663.71 1990 2003 465.6
C 10 91 20046 38.75 1990 2003 465.6
D 1 52 3006153 6282.29 1963 1905 478.2
D 7 38 995905 2078.59 1963 1905 478.2
D 5 222 355249 738.89 1963 1905 478.2

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