ASTROSAT CZTI

Data Quality Report

Orbit 37008

Creation date: 2024-06-27T21:34:11.275523
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/AS1C07_015T01_9000005256_37008cztM0_level2.evt modeM0/AS1C07_015T01_9000005256_37008cztM0_level2_quad_clean.evt
Size (bytes)97,845,12023,768,640
Size93.3 MB 22.7 MB
Events in quadrant A624,370159,980
Events in quadrant B734,310158,534
Events in quadrant C653,561156,528
Events in quadrant D863,945150,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025450
B029070
C025880
D033330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123410.081037%
B1234191.539708%
C123400.000000%
D1234352.836305%

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 1234 1234 0 0 0.00% 0.00%
B 1234 1234 14 14 1.13% 1.13%
C 1234 1234 0 0 0.00% 0.00%
D 1234 1234 26 26 2.11% 2.11%

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 33254 1017.0 148 145 32.6
A 12 189 9776 295.83 148 145 32.6
A 13 6 4211 124.89 148 145 32.6
B 5 172 76410 2529.11 148 144 30.2
B 0 213 14835 487.18 148 144 30.2
B 15 85 11120 363.98 148 144 30.2
C 15 214 50930 1370.84 149 150 37.0
C 0 207 11027 293.63 149 150 37.0
C 10 20 3399 87.71 149 150 37.0
D 2 250 85992 2266.27 147 143 37.9
D 4 239 74949 1974.75 147 143 37.9
D 1 52 29224 767.69 147 143 37.9

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