ASTROSAT CZTI

Data Quality Report

Orbit 00264

Creation date: 2024-06-27T13:58:32.444134
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/AS1P01_122T02_9000000028_00264cztM0_level2.evt modeM0/AS1P01_122T02_9000000028_00264cztM0_level2_quad_clean.evt
Size (bytes)750,162,24046,261,440
Size715.4 MB 44.1 MB
Events in quadrant A5,485,043270,128
Events in quadrant B5,830,599276,795
Events in quadrant C5,373,694267,065
Events in quadrant D5,717,803257,345

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01057
B01037
C01035
D01057

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208521232
B0218441172
C0205171242
D0215811257

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A467540.085561%
B468790.192020%
C4672110.235445%
D4673130.278194%

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 7341 4701 97 97 1.32% 2.06%
B 7341 4714 189 189 2.57% 4.01%
C 7341 4695 107 107 1.46% 2.28%
D 7341 4695 192 192 2.62% 4.09%

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 15 250 19165 57.66 1401 1390 308.3
A 13 17 15734 46.53 1401 1390 308.3
A 12 149 15282 45.06 1401 1390 308.3
B 7 220 117746 348.85 1417 1425 333.4
B 8 6 64043 187.79 1417 1425 333.4
B 8 82 47890 139.35 1417 1425 333.4
C 9 68 127025 345.9 1292 1344 363.3
C 9 54 66089 178.19 1292 1344 363.3
C 1 192 34882 92.3 1292 1344 363.3
D 10 154 431133 1111.98 1239 1288 386.6
D 12 196 147640 378.6 1239 1288 386.6
D 1 4 117565 300.8 1239 1288 386.6

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