ASTROSAT CZTI

Data Quality Report

Orbit 04455

Creation date: 2024-06-27T14:42:16.086560
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_253T01_9000000560_04455cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04455cztM0_level2_quad_clean.evt
Size (bytes)2,467,388,160410,575,680
Size2.3 GB 391.6 MB
Events in quadrant A16,838,7772,521,136
Events in quadrant B17,620,3732,489,494
Events in quadrant C16,445,0682,506,429
Events in quadrant D21,360,8882,417,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07460
B07460
C07462
D07460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07637460
B07744866
C07544249
D09105068

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363963871.063304%
B363953801.044099%
C364022060.565903%
D3639317684.858077%

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 51312 36430 42 42 0.08% 0.12%
B 51312 36431 26 26 0.05% 0.07%
C 51312 36431 40 40 0.08% 0.11%
D 51312 36430 1412 1412 2.75% 3.88%

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 13 396816 469.63 4141 4059 836.3
A 15 47 136127 157.92 4141 4059 836.3
A 0 118 130154 150.78 4141 4059 836.3
B 15 204 600874 748.2 4195 4098 797.6
B 15 185 389936 483.74 4195 4098 797.6
B 4 48 94568 113.42 4195 4098 797.6
C 14 48 291854 310.2 4029 4053 927.8
C 9 16 234956 248.87 4029 4053 927.8
C 9 247 99795 103.19 4029 4053 927.8
D 12 233 3938358 4145.31 3951 3831 949.2
D 12 227 431710 450.8 3951 3831 949.2
D 13 239 304193 316.45 3951 3831 949.2

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