ASTROSAT CZTI

Data Quality Report

Orbit 01080

Creation date: 2024-06-27T14:07:08.302165
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_998T02_9000000190_01080cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01080cztM0_level2_quad_clean.evt
Size (bytes)587,692,80066,245,760
Size560.5 MB 63.2 MB
Events in quadrant A4,471,539430,186
Events in quadrant B4,724,211438,815
Events in quadrant C4,436,061428,132
Events in quadrant D3,893,664421,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162041
B0169381
C0160961
D0145161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407410.024546%
B407410.024546%
C407410.024546%
D407440.098184%

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 4074 4074 44 44 1.08% 1.08%
B 4074 4074 57 57 1.40% 1.40%
C 4074 4074 34 34 0.83% 0.83%
D 4074 4074 19 19 0.47% 0.47%

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 12 243 6111 17.53 1163 1173 281.6
A 11 79 4574 12.08 1163 1173 281.6
A 3 111 3776 9.24 1163 1173 281.6
B 15 22 64439 220.13 1214 1224 287.2
B 5 191 19596 63.98 1214 1224 287.2
B 7 221 18147 58.93 1214 1224 287.2
C 15 241 192987 639.39 1075 1111 300.1
C 9 52 16376 50.87 1075 1111 300.1
C 3 111 14280 43.88 1075 1111 300.1
D 2 216 15335 44.84 1029 1063 318.3
D 12 22 9678 27.06 1029 1063 318.3
D 10 85 8855 24.48 1029 1063 318.3

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