ASTROSAT CZTI

Data Quality Report

Orbit 35892

Creation date: 2022-06-08T22:40:26.153283
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/AS1A11_080T01_9000005146_35892cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35892cztM0_level2_quad_clean.evt
Size (bytes)1,008,933,120165,214,080
Size962.2 MB 157.6 MB
Events in quadrant A5,513,3211,110,084
Events in quadrant B7,512,5981,072,771
Events in quadrant C5,762,8111,090,748
Events in quadrant D11,018,536962,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232444
B0297203
C0236653
D0403693

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11084220.198484%
B110846645.990617%
C110841000.902201%
D11084165014.886323%

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 15112 11087 4 4 0.03% 0.04%
B 15112 11087 411 411 2.72% 3.71%
C 15112 11087 63 63 0.42% 0.57%
D 15112 11087 1743 1743 11.53% 15.72%

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 10 83 284544 1071.9 1305 1282 264.3
A 15 169 114056 426.75 1305 1282 264.3
A 13 6 28131 101.6 1305 1282 264.3
B 5 172 869270 3556.26 1271 1242 244.1
B 5 63 760614 3111.1 1271 1242 244.1
B 5 255 560729 2292.18 1271 1242 244.1
C 15 214 461761 1560.39 1263 1276 295.1
C 0 10 259791 876.0 1263 1276 295.1
C 0 207 106472 356.47 1263 1276 295.1
D 1 52 2690321 9017.62 1212 1180 298.2
D 12 227 2401810 8050.15 1212 1180 298.2
D 2 250 393601 1315.92 1212 1180 298.2

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