ASTROSAT CZTI

Data Quality Report

Orbit 24488

Creation date: 2024-06-27T19:06:28.907148
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/AS1T03_183T01_9000003606_24488cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24488cztM0_level2_quad_clean.evt
Size (bytes)1,235,286,720291,735,360
Size1.2 GB 278.2 MB
Events in quadrant A10,056,7701,922,480
Events in quadrant B8,250,7032,001,057
Events in quadrant C8,192,6761,911,934
Events in quadrant D9,781,6261,849,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409483
B0356093
C0352433
D0407103

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167077954.758484%
B167082181.304764%
C167082561.532200%
D167086844.093847%

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 19582 16710 344 344 1.76% 2.06%
B 19583 16711 30 30 0.15% 0.18%
C 19583 16710 2 2 0.01% 0.01%
D 19583 16711 392 392 2.00% 2.35%

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 14 111 2152969 5380.59 2005 1961 399.8
A 4 2 162868 402.5 2005 1961 399.8
A 13 254 26068 60.3 2005 1961 399.8
B 3 64 267844 706.09 2019 1969 376.5
B 12 111 46358 117.88 2019 1969 376.5
B 11 111 41135 104.01 2019 1969 376.5
C 14 238 311912 694.6 1940 1953 446.2
C 3 233 141507 312.73 1940 1953 446.2
C 2 16 102044 224.3 1940 1953 446.2
D 12 218 1732890 3673.32 1947 1889 471.2
D 1 52 266524 561.58 1947 1889 471.2
D 13 174 139394 291.8 1947 1889 471.2

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