ASTROSAT CZTI

Data Quality Report

Orbit 29727

Creation date: 2024-06-27T20:07:11.143249
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/AS1A10_007T01_9000004276_29727cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29727cztM0_level2_quad_clean.evt
Size (bytes)3,615,085,440430,801,920
Size3.4 GB 410.8 MB
Events in quadrant A17,243,3632,711,131
Events in quadrant B29,449,6962,719,936
Events in quadrant C21,904,6062,664,673
Events in quadrant D38,466,4492,475,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07300
B07300
C07300
D07300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0745157
B01134427
C0874648
D01396597

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A360545011.389582%
B3605514684.071557%
C3605414834.113275%
D36054493613.690575%

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 44808 36056 0 0 0.00% 0.00%
B 44809 36057 401 401 0.89% 1.11%
C 44809 36057 438 438 0.98% 1.21%
D 44809 36056 4271 4271 9.53% 11.85%

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 66527 69.68 4463 4366 892.1
A 3 137 45682 46.32 4463 4366 892.1
A 0 226 37609 37.27 4463 4366 892.1
B 6 159 10233724 12233.49 4376 4267 836.2
B 10 245 1059527 1261.99 4376 4267 836.2
B 0 229 663128 787.94 4376 4267 836.2
C 3 233 2681464 2679.7 4284 4316 999.0
C 10 22 1550713 1547.87 4284 4316 999.0
C 14 238 699247 695.59 4284 4316 999.0
D 8 195 10060889 10377.3 4064 3959 969.1
D 7 223 6364542 6563.2 4064 3959 969.1
D 7 80 4631783 4775.24 4064 3959 969.1

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