ASTROSAT CZTI

Data Quality Report

Orbit 00314

Creation date: 2024-06-27T13:59:02.942007
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_162T09_9000000038_00314cztM0_level2.evt modeM0/AS1P01_162T09_9000000038_00314cztM0_level2_quad_clean.evt
Size (bytes)730,454,40070,087,680
Size696.6 MB 66.8 MB
Events in quadrant A5,601,560455,637
Events in quadrant B6,079,256458,550
Events in quadrant C5,018,748449,119
Events in quadrant D5,115,524435,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199124
B0213223
C0181893
D0184733

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A459870.152240%
B45981042.261853%
C4598160.347977%
D4598230.500217%

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 7138 4600 135 135 1.89% 2.93%
B 7138 4600 401 401 5.62% 8.72%
C 7138 4600 51 51 0.71% 1.11%
D 7138 4600 70 70 0.98% 1.52%

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 69 61972 194.07 1410 1398 312.1
A 15 53 27438 83.43 1410 1398 312.1
A 12 149 21271 63.67 1410 1398 312.1
B 8 6 713554 2190.14 1380 1393 325.2
B 10 252 25303 73.53 1380 1393 325.2
B 5 46 19188 54.73 1380 1393 325.2
C 2 192 95334 272.37 1233 1271 345.4
C 4 253 22691 62.02 1233 1271 345.4
C 9 68 18404 49.61 1233 1271 345.4
D 1 5 78703 201.53 1225 1271 384.2
D 13 117 45426 114.92 1225 1271 384.2
D 2 170 45411 114.88 1225 1271 384.2

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