ASTROSAT CZTI

Data Quality Report

Orbit 33648

Creation date: 2024-06-27T20:51:03.897477
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/AS1T04_076T01_9000004810_33648cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33648cztM0_level2_quad_clean.evt
Size (bytes)1,212,629,760118,808,640
Size1.1 GB 113.3 MB
Events in quadrant A11,420,297696,951
Events in quadrant B9,534,890693,883
Events in quadrant C6,861,405748,554
Events in quadrant D8,177,968706,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411963
B0351922
C0272162
D0319402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10841251223.171294%
B10841141713.070750%
C108411321.217600%
D108412812.592012%

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 13618 10843 2349 2349 17.25% 21.66%
B 13618 10843 1230 1230 9.03% 11.34%
C 13618 10843 112 112 0.82% 1.03%
D 13618 10843 237 237 1.74% 2.19%

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 15 169 6958802 30591.49 1144 1122 227.4
A 13 6 24486 102.73 1144 1122 227.4
A 13 254 15664 63.94 1144 1122 227.4
B 5 172 4125483 17474.74 1222 1190 236.0
B 4 170 165494 696.16 1222 1190 236.0
B 5 255 87492 365.66 1222 1190 236.0
C 3 233 902235 3103.56 1246 1256 290.3
C 15 214 499911 1717.69 1246 1256 290.3
C 0 10 308597 1058.68 1246 1256 290.3
D 8 195 1757273 5298.12 1237 1211 331.4
D 2 250 585849 1763.88 1237 1211 331.4
D 13 249 286197 859.82 1237 1211 331.4

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