ASTROSAT CZTI

Data Quality Report

Orbit 00654

Creation date: 2024-06-27T14:01:04.425183
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/AS1P01_126T04_9000000092_00654cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00654cztM0_level2_quad_clean.evt
Size (bytes)782,553,60043,989,120
Size746.3 MB 42.0 MB
Events in quadrant A5,956,870245,929
Events in quadrant B6,096,222249,271
Events in quadrant C5,364,924251,136
Events in quadrant D5,955,882241,440

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211732
B0216102
C0194506
D0211882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490570.142712%
B4905160.326198%
C490420.040783%
D4904921.876020%

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 7060 4906 120 120 1.70% 2.45%
B 7060 4906 143 143 2.03% 2.91%
C 7059 4905 39 39 0.55% 0.80%
D 7059 4905 237 237 3.36% 4.83%

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 12 236 31344 88.74 1511 1495 336.4
A 13 164 29214 82.4 1511 1495 336.4
A 0 238 23684 65.96 1511 1495 336.4
B 7 221 187975 527.23 1495 1505 353.7
B 5 191 66516 183.81 1495 1505 353.7
B 0 230 47278 129.42 1495 1505 353.7
C 5 249 16943 40.94 1354 1401 379.7
C 9 52 15967 38.37 1354 1401 379.7
C 15 241 11542 26.71 1354 1401 379.7
D 12 237 281382 683.86 1304 1360 409.5
D 1 4 275690 669.96 1304 1360 409.5
D 13 216 87883 211.3 1304 1360 409.5

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