ASTROSAT CZTI

Data Quality Report

Orbit 01350

Creation date: 2024-06-27T14:11:21.800189
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/AS1G04_002T02_9000000230_01350cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01350cztM0_level2_quad_clean.evt
Size (bytes)1,298,793,600105,912,000
Size1.2 GB 101.0 MB
Events in quadrant A11,326,020671,218
Events in quadrant B10,302,013689,635
Events in quadrant C8,426,673681,454
Events in quadrant D8,803,523662,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388342
B0356981
C0301691
D0312631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72115057.003190%
B72111241.719595%
C721120.027735%
D7211550.762724%

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 7226 7211 1704 1704 23.58% 23.63%
B 7226 7212 970 970 13.42% 13.45%
C 7226 7212 265 265 3.67% 3.67%
D 7225 7211 610 610 8.44% 8.46%

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 15 127 2603075 4709.08 2249 2263 552.3
A 4 32 45262 77.85 2249 2263 552.3
A 12 243 34843 58.99 2249 2263 552.3
B 8 4 718739 1286.32 2344 2358 556.9
B 5 191 190895 338.53 2344 2358 556.9
B 6 53 161194 285.2 2344 2358 556.9
C 15 241 167650 281.03 2102 2174 588.8
C 3 111 26059 40.56 2102 2174 588.8
C 3 79 23452 36.14 2102 2174 588.8
D 15 13 425513 663.84 2057 2127 637.8
D 9 53 369540 576.08 2057 2127 637.8
D 1 83 140525 217.0 2057 2127 637.8

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