ASTROSAT CZTI

Data Quality Report

Orbit 37355

Creation date: 2024-06-27T21:38:54.933396
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_014T01_9000005314_37355cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37355cztM0_level2_quad_clean.evt
Size (bytes)1,085,258,880142,986,240
Size1.0 GB 136.4 MB
Events in quadrant A5,766,067931,146
Events in quadrant B6,412,024926,484
Events in quadrant C5,578,283920,592
Events in quadrant D14,385,541806,606

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235184
B0258623
C0227193
D0501263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10758550.511247%
B107583072.853690%
C10758810.752928%
D10758227121.109872%

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 13564 10760 20 20 0.15% 0.19%
B 13564 10760 212 212 1.56% 1.97%
C 13564 10760 48 48 0.35% 0.45%
D 13564 10760 2251 2251 16.60% 20.92%

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 529971 2065.83 1260 1235 255.9
A 15 237 223251 867.44 1260 1235 255.9
A 9 143 50830 193.77 1260 1235 255.9
B 5 172 622819 2599.56 1242 1208 239.1
B 4 171 305118 1270.94 1242 1208 239.1
B 5 255 247703 1030.83 1242 1208 239.1
C 15 214 453510 1587.07 1224 1236 285.0
C 0 10 149277 519.49 1224 1236 285.0
C 14 254 121168 420.85 1224 1236 285.0
D 12 227 6207536 21929.52 1152 1124 283.0
D 12 235 3070613 10845.63 1152 1124 283.0
D 13 249 194427 683.01 1152 1124 283.0

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