ASTROSAT CZTI

Data Quality Report

Orbit 12441

Creation date: 2024-06-27T16:27:25.081931
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/AS1A04_174T01_9000001850_12441cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12441cztM0_level2_quad_clean.evt
Size (bytes)1,331,686,080179,899,200
Size1.2 GB 171.6 MB
Events in quadrant A17,882,8231,106,380
Events in quadrant B8,147,5041,162,344
Events in quadrant C5,874,3081,200,209
Events in quadrant D7,596,9411,126,580

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0617763
B0322312
C0255602
D0307832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12328208316.896496%
B123286575.329332%
C12328910.738157%
D123282381.930565%

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 13609 12329 863 863 6.34% 7.00%
B 13609 12329 361 361 2.65% 2.93%
C 13609 12330 13 13 0.10% 0.11%
D 13609 12329 144 144 1.06% 1.17%

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 23 8160519 27755.79 1436 1407 294.0
A 13 251 2304258 7833.87 1436 1407 294.0
A 0 226 578819 1964.25 1436 1407 294.0
B 4 239 1270715 4538.24 1464 1429 279.7
B 3 64 700587 2499.79 1464 1429 279.7
B 3 209 153234 542.77 1464 1429 279.7
C 15 208 166369 489.11 1459 1473 337.1
C 14 234 18259 49.79 1459 1473 337.1
C 13 61 10686 27.33 1459 1473 337.1
D 1 52 1521350 4346.78 1449 1414 349.7
D 13 104 199788 567.32 1449 1414 349.7
D 7 80 139262 394.22 1449 1414 349.7

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