ASTROSAT CZTI

Data Quality Report

Orbit 33475

Creation date: 2024-06-27T20:49:12.498247
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_047T10_9000004802_33475cztM0_level2.evt modeM0/AS1A11_047T10_9000004802_33475cztM0_level2_quad_clean.evt
Size (bytes)422,902,08059,474,880
Size403.3 MB 56.7 MB
Events in quadrant A2,134,450381,689
Events in quadrant B3,121,887371,431
Events in quadrant C2,345,441371,109
Events in quadrant D4,883,526343,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095292
B0121921
C097031
D0178041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A474510.021075%
B47451613.393045%
C474550.105374%
D474562413.150685%

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 4745 4745 0 0 0.00% 0.00%
B 4745 4745 108 108 2.28% 2.28%
C 4745 4745 3 3 0.06% 0.06%
D 4745 4745 583 583 12.29% 12.29%

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 13 254 8773 74.49 548 538 110.6
A 13 6 8140 68.76 548 538 110.6
A 3 137 5443 44.37 548 538 110.6
B 5 172 336628 3202.17 541 527 105.0
B 5 255 276414 2628.49 541 527 105.0
B 0 230 169213 1607.14 541 527 105.0
C 15 214 201433 1631.39 531 534 123.1
C 0 10 27548 219.37 531 534 123.1
C 14 67 14169 110.72 531 534 123.1
D 2 250 1407189 10622.2 500 489 132.4
D 8 195 1003327 7572.58 500 489 132.4
D 2 249 210403 1585.09 500 489 132.4

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