ASTROSAT CZTI

Data Quality Report

Orbit 41410

Creation date: 2024-06-27T22:28:40.772784
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/AS1A12_035T01_9000005666_41410cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41410cztM0_level2_quad_clean.evt
Size (bytes)652,345,920171,990,720
Size622.1 MB 164.0 MB
Events in quadrant A6,021,1861,146,504
Events in quadrant B5,547,3701,170,041
Events in quadrant C5,987,4991,097,454
Events in quadrant D5,751,9791,043,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240544
B0237083
C0244473
D0246233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10824460.424982%
B10824910.840724%
C108243403.141168%
D108241241.145602%

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 13600 10826 25 25 0.18% 0.23%
B 13600 10826 53 53 0.39% 0.49%
C 13600 10826 328 328 2.41% 3.03%
D 13600 10826 89 89 0.65% 0.82%

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 987579 4023.84 1199 1175 245.1
A 2 79 262216 1064.87 1199 1175 245.1
A 13 248 63639 254.81 1199 1175 245.1
B 5 255 636138 2757.29 1185 1148 230.3
B 0 190 169989 733.15 1185 1148 230.3
B 0 189 42757 180.68 1185 1148 230.3
C 0 10 864529 3218.2 1151 1157 268.3
C 15 214 473572 1760.92 1151 1157 268.3
C 0 15 138343 511.36 1151 1157 268.3
D 1 52 465363 1616.97 1173 1140 287.1
D 2 249 362797 1259.72 1173 1140 287.1
D 13 249 198651 687.97 1173 1140 287.1

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