ASTROSAT CZTI

Data Quality Report

Orbit 23298

Creation date: 2024-06-27T18:52:29.527119
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_012T03_9000003442_23298cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23298cztM0_level2_quad_clean.evt
Size (bytes)2,072,013,120531,676,800
Size1.9 GB 507.0 MB
Events in quadrant A13,027,4773,602,723
Events in quadrant B13,396,7473,650,190
Events in quadrant C14,082,5473,508,597
Events in quadrant D20,289,9493,353,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05860
C05860
D05860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589015
B0595145
C0613915
D0805955

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289561010.348805%
B289562050.707971%
C289563701.277801%
D2895614955.163006%

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 31661 28960 0 0 0.00% 0.00%
B 31661 28960 21 21 0.07% 0.07%
C 31661 28961 31 31 0.10% 0.11%
D 31661 28959 1219 1219 3.85% 4.21%

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 13 254 42986 58.78 3378 3297 675.2
A 3 137 30389 40.13 3378 3297 675.2
A 0 226 29157 38.3 3378 3297 675.2
B 0 229 84388 126.93 3363 3273 639.1
B 12 111 78742 118.09 3363 3273 639.1
B 11 111 70195 104.72 3363 3273 639.1
C 10 9 572684 758.54 3239 3252 750.7
C 14 238 514636 681.22 3239 3252 750.7
C 7 247 255794 336.41 3239 3252 750.7
D 1 52 7154395 9336.28 3205 3110 766.0
D 7 238 417993 541.65 3205 3110 766.0
D 12 218 127871 162.88 3205 3110 766.0

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