ASTROSAT CZTI

Data Quality Report

Orbit 05396

Creation date: 2024-06-27T14:54:43.456654
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/AS1G05_214T01_9000000684_05396cztM0_level2.evt modeM0/AS1G05_214T01_9000000684_05396cztM0_level2_quad_clean.evt
Size (bytes)2,450,753,280318,110,400
Size2.3 GB 303.4 MB
Events in quadrant A13,064,8071,973,362
Events in quadrant B13,890,1491,970,883
Events in quadrant C15,560,6911,970,667
Events in quadrant D29,802,8311,775,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05780
C05780
D05780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0585966
B0596945
C0639975
D01085156

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282713841.358282%
B282714141.464398%
C282713471.227406%
D28247297310.525012%

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 32396 28277 15 15 0.05% 0.05%
B 32396 28277 59 59 0.18% 0.21%
C 32396 28277 23 23 0.07% 0.08%
D 32396 28253 2527 2527 7.80% 8.94%

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 50 170710 249.64 3298 3225 670.9
A 4 2 74824 106.72 3298 3225 670.9
A 13 6 55199 77.47 3298 3225 670.9
B 15 204 304327 476.11 3327 3249 632.4
B 4 81 197947 307.89 3327 3249 632.4
B 4 48 143615 221.97 3327 3249 632.4
C 1 16 2887866 3896.02 3209 3228 740.4
C 9 247 131227 172.88 3209 3228 740.4
C 13 61 25890 30.61 3209 3228 740.4
D 7 237 14622297 19171.04 3118 3017 762.6
D 2 63 1176742 1539.17 3118 3017 762.6
D 7 203 787043 1028.13 3118 3017 762.6

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