ASTROSAT CZTI

Data Quality Report

Orbit 34764

Creation date: 2022-03-04T02:53:21.033492
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/AS1C07_004T01_9000004990_34764cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34764cztM0_level2_quad_clean.evt
Size (bytes)973,503,360171,529,920
Size928.4 MB 163.6 MB
Events in quadrant A5,542,2331,104,794
Events in quadrant B6,385,2341,124,083
Events in quadrant C6,107,4871,117,151
Events in quadrant D10,634,0701,015,794

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245335
B0265733
C0253733
D0399553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12039170.141208%
B12039730.606363%
C12039460.382092%
D120396155.108398%

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 31607 12042 4 4 0.01% 0.03%
B 31607 12042 44 44 0.14% 0.37%
C 31607 12042 28 28 0.09% 0.23%
D 31607 12042 561 561 1.77% 4.66%

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 86969 308.38 1389 1361 277.6
A 13 6 29153 100.11 1389 1361 277.6
A 9 143 24066 81.79 1389 1361 277.6
B 0 190 342085 1286.58 1383 1349 264.8
B 5 255 245184 920.69 1383 1349 264.8
B 0 189 96370 358.79 1383 1349 264.8
C 15 214 507884 1615.51 1348 1361 313.5
C 14 67 165804 524.48 1348 1361 313.5
C 0 10 146176 461.87 1348 1361 313.5
D 8 195 2312354 7165.04 1321 1288 322.5
D 12 227 1007711 3120.23 1321 1288 322.5
D 13 249 635464 1966.15 1321 1288 322.5

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