ASTROSAT CZTI

Data Quality Report

Orbit 11179

Creation date: 2024-06-27T16:09:25.427566
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_049T01_9000001632_11179cztM0_level2.evt modeM0/AS1A04_049T01_9000001632_11179cztM0_level2_quad_clean.evt
Size (bytes)101,113,92010,704,960
Size96.4 MB 10.2 MB
Events in quadrant A684,62759,022
Events in quadrant B779,78860,186
Events in quadrant C489,31158,500
Events in quadrant D1,022,58353,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282
B0284
C0282
D0273

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03103259
B03385272
C02710265
D04535686

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1226413.344209%
B1228252.035831%
C122200.000000%
D1202766.322795%

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 1308 1259 28 28 2.14% 2.22%
B 1317 1262 18 18 1.37% 1.43%
C 1299 1251 0 0 0.00% 0.00%
D 1291 1242 77 77 5.96% 6.20%

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 8 5 125110 4337.51 130 127 28.8
A 8 15 36382 1258.22 130 127 28.8
A 14 238 13790 474.17 130 127 28.8
B 4 239 149913 5543.64 131 128 27.0
B 11 51 40667 1500.38 131 128 27.0
B 10 16 24832 914.31 131 128 27.0
C 13 61 949 26.36 125 125 31.3
C 14 234 910 25.11 125 125 31.3
C 8 222 342 6.94 125 125 31.3
D 13 152 219145 7087.63 120 116 30.9
D 2 136 192648 6230.2 120 116 30.9
D 1 52 109945 3553.99 120 116 30.9

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