ASTROSAT CZTI

Data Quality Report

Orbit 30151

Creation date: 2024-06-27T20:11:32.890253
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/AS1A10_097T03_9000004336_30151cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30151cztM0_level2_quad_clean.evt
Size (bytes)944,061,120177,707,520
Size900.3 MB 169.5 MB
Events in quadrant A5,216,4721,177,291
Events in quadrant B8,261,5601,190,284
Events in quadrant C7,828,5501,156,357
Events in quadrant D6,599,8751,155,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216722
B0313243
C0305852
D0260942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10156710.699094%
B101551721.693747%
C101555165.081241%
D101561111.092950%

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 12741 10158 3 3 0.02% 0.03%
B 12740 10157 1 1 0.01% 0.01%
C 12740 10157 146 146 1.15% 1.44%
D 12741 10158 56 56 0.44% 0.55%

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 0 13 45651 167.81 1334 1309 264.2
A 8 192 25101 90.04 1334 1309 264.2
A 13 254 18939 66.72 1334 1309 264.2
B 6 159 2980474 12041.81 1326 1293 247.4
B 0 190 66964 265.44 1326 1293 247.4
B 12 111 29185 112.74 1326 1293 247.4
C 3 233 2457186 8143.5 1309 1319 301.6
C 14 238 216122 712.27 1309 1319 301.6
C 2 114 23675 74.13 1309 1319 301.6
D 12 227 1030730 3262.68 1326 1299 315.5
D 8 195 213573 672.78 1326 1299 315.5
D 7 1 157435 494.86 1326 1299 315.5

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