ASTROSAT CZTI

Data Quality Report

Orbit 26960

Creation date: 2024-06-27T19:34:59.161222
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/AS1C05_019T03_9000003898_26960cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26960cztM0_level2_quad_clean.evt
Size (bytes)1,550,597,760222,347,520
Size1.4 GB 212.0 MB
Events in quadrant A8,364,9671,527,475
Events in quadrant B20,167,5951,340,107
Events in quadrant C6,185,3261,550,614
Events in quadrant D11,393,1521,440,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332360
B0684030
C0265210
D0423550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1261610268.132530%
B12617584546.326385%
C126171461.157169%
D12617142211.270508%

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 13871 12617 636 636 4.59% 5.04%
B 13871 12616 4691 4691 33.82% 37.18%
C 13872 12617 5 5 0.04% 0.04%
D 13872 12617 1265 1265 9.12% 10.03%

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 14 235 2632821 9162.03 1444 1413 287.2
A 6 16 71334 243.45 1444 1413 287.2
A 8 192 29773 98.74 1444 1413 287.2
B 0 189 14492914 59055.92 1311 1277 245.4
B 5 172 447400 1818.03 1311 1277 245.4
B 12 111 29568 115.29 1311 1277 245.4
C 2 16 243208 722.72 1436 1440 334.5
C 14 238 229380 681.39 1436 1440 334.5
C 15 208 56010 163.13 1436 1440 334.5
D 2 250 2822405 8397.17 1402 1361 336.0
D 1 52 2189898 6514.44 1402 1361 336.0
D 12 233 826078 2454.87 1402 1361 336.0

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