ASTROSAT CZTI

Data Quality Report

Orbit 21535

Creation date: 2024-06-27T18:29:15.822849
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_138T03_9000003178_21535cztM0_level2.evt modeM0/AS1T03_138T03_9000003178_21535cztM0_level2_quad_clean.evt
Size (bytes)126,578,88031,484,160
Size120.7 MB 30.0 MB
Events in quadrant A757,825218,208
Events in quadrant B791,073227,322
Events in quadrant C778,012211,981
Events in quadrant D1,406,158188,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030861
B032521
C032031
D051911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143270.488827%
B143290.628492%
C1432292.025140%
D143217712.360335%

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 2587 1433 0 0 0.00% 0.00%
B 2587 1433 0 0 0.00% 0.00%
C 2587 1433 0 0 0.00% 0.00%
D 2587 1433 130 130 5.03% 9.07%

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 12 96 12739 313.1 193 189 40.1
A 13 254 2032 45.98 193 189 40.1
A 0 226 1704 37.8 193 189 40.1
B 0 230 16056 414.35 196 192 38.3
B 0 197 4679 117.2 196 192 38.3
B 12 111 4259 106.23 196 192 38.3
C 14 238 29678 643.82 187 188 45.8
C 3 233 16105 347.5 187 188 45.8
C 13 61 1254 23.27 187 188 45.8
D 1 52 371430 8746.47 172 168 42.4
D 7 38 233041 5486.2 172 168 42.4
D 14 35 77971 1832.94 172 168 42.4

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